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# Wave Patterns

• Difficulty Level : Medium
• Last Updated : 10 Jun, 2021

Given length and width, print the pattern in wave form using ‘/’ and ”.
Examples :

```Input : wave_height = 4
wave_length = 4
Output :
/\      /\      /\      /\
/  \    /  \    /  \    /  \
/    \  /    \  /    \  /    \
/      \/      \/      \/      \

Input : wave_height = 2
wave_length = 3
Output :
/\  /\  /\
/  \/  \/  \```

## C++

 `#include ``using` `namespace` `std;` `// Function definition``void` `pattern(``int` `wave_height, ``int` `wave_length)``{``    ``int` `i, j, k, e, n, count, x;``    ``e = 2;``    ``x = 1;` `    ``// for loop for height of wave``    ``for` `(i = 0; i < wave_height; i++) {` `        ``for` `(j = wave_height; j <= wave_height + i; j++)``            ``cout << ``" "``;      ` `        ``// for loop for wave length``        ``for` `(count = 1; count <= wave_length; count++) {` `            ``// checking for intermediate spaces``            ``for` `(n = (wave_height + wave_height - 2); n >= x; n--)``                ``cout << ``" "``;``            ``for` `(k = 1; k <= e; k++) {``                ``if` `(k == 1)``                    ``cout << ``"/"``;``                ``else` `if` `(k == e)``                    ``cout << ``"\\"``;``                ``else``                    ``cout << ``" "``;``            ``}``        ``}` `        ``// incrementing counters value by two``        ``x = x + 2;``        ``e = e + 2;``        ``cout << endl;``    ``}``}` `// Driver code``int` `main()``{``    ``// change value to decrease or increase``    ``// the height of wave``    ``int` `wave_height = 4;` `    ``// change value to decrease or increase``    ``// the length of wave``    ``int` `wave_length = 4;` `    ``pattern(wave_height, wave_length);` `    ``return` `0;``}`

## Java

 `import` `java.io.*;` `class` `GFG {` `    ``// Function definition``    ``static` `void` `pattern(``int` `wave_height,``                        ``int` `wave_length)``    ``{``        ``int` `i, j, k, e, n, count, x;``        ``e = ``2``;``        ``x = ``1``;` `        ``// for loop for height``        ``// of wave``        ``for` `(i = ``0``; i < wave_height; i++)``        ``{``            ``for` `(j = wave_height; j <= wave_height + i; j++)``                ``System.out.print(``" "``);` `            ``// for loop for wave``            ``// length``            ``for` `(count = ``1``; count <= wave_length; count++)``            ``{``                ``// checking for intermediate``                ``// spaces``                ``for` `(n = (wave_height + wave_height - ``2``); n >= x; n--)``                    ``System.out.print(``" "``);``            ` `                ``for` `(k = ``1``; k <= e; k++)``                ``{``                    ``if` `(k == ``1``)``                        ``System.out.print(``"/"``);``                    ``else` `if` `(k == e)``                        ``System.out.print(``"\\"``);``                    ``else``                        ``System.out.print(``" "``);``                ``}``            ``}` `            ``// incrementing counters``            ``// value by two``            ``x = x + ``2``;``            ``e = e + ``2``;``            ` `            ``System.out.println();``        ``}``    ``}` `    ``// Driver code``    ``public` `static` `void` `main(String args[])``    ``{``        ``// change value to decrease or``        ``// increase the height of wave``        ``int` `wave_height = ``4``;` `        ``// change value to decrease or``        ``// increase the length of wave``        ``int` `wave_length = ``4``;` `        ``pattern(wave_height, wave_length);``    ``}``}` `// This code is contributed by Nikita Tiwari.`

## Python3

 `# Function definition``def` `pattern(wave_height, wave_length) :` `    ``e ``=` `2``    ``x ``=` `1` `    ``# for loop for height``    ``# of wave``    ``for` `i ``in` `range``(``0``, wave_height) :``    ` `        ``for` `j ``in` `range``(wave_height, wave_height ``+` `i``+``1``) :``            ``print``(``" "``, end ``=``"")    ` `        ``# for loop for wave``        ``# length``        ``for` `count ``in` `range``(``1``, wave_length ``+` `1``) :``        ` `            ``# checking for intermediate spaces``            ``for` `n ``in` `range``((wave_height ``+` `wave_height ``-` `2``), x``-``1``, ``-``1``) :``                ``print``(``" "``, end ``=``"")``        ` `            ``for` `k ``in` `range``(``1``, e ``+` `1``) :``        ` `                ``if` `(k ``=``=` `1``) :``                    ``print``(``"/"``, end ``=``"")``                ``elif` `(k ``=``=` `e) :``                    ``print``(``"\\", end ="``")``                ``else` `:``                    ``print``(``" "``, end ``=``"")``            ` `        ``# incrementing counters``        ``# value by two``        ``x ``=` `x ``+` `2``        ``e ``=` `e ``+` `2``        ` `        ``print``("")` `# Driver code` `# Change value to decrease or increase``# the height of wave``wave_height ``=` `4` `# change value to decrease or increase``# the length of wave``wave_length ``=` `4` `pattern(wave_height, wave_length);` `# This code is contributed by Nikita Tiwari.`

## C#

 `// C# code for Wave Patterns``using` `System;` `class` `GFG {` `// Function definition``    ``static` `void` `pattern(``int` `wave_height,``                        ``int` `wave_length)``    ``{``        ``int` `i, j, k, e, n, count, x;``        ``e = 2;``        ``x = 1;` `        ``// for loop for height``        ``// of wave``        ``for` `(i = 0; i < wave_height; i++)``        ``{``            ``for` `(j = wave_height; j <= wave_height + i; j++)``                ``Console.Write(``" "``);` `            ``// for loop for wave``            ``// length``            ``for` `(count = 1; count <= wave_length; count++)``            ``{``                ``// checking for intermediate``                ``// spaces``                ``for` `(n = (wave_height + wave_height - 2); n >= x; n--)``                    ``Console.Write(``" "``);``            ` `                ``for` `(k = 1; k <= e; k++)``                ``{``                    ``if` `(k == 1)``                    ``Console.Write(``"/"``);``                    ``else` `if` `(k == e)``                    ``Console.Write(``"\\"``);``                    ``else``                    ``Console.Write(``" "``);``                ``}``            ``}` `            ``// incrementing counters``            ``// value by two``            ``x = x + 2;``            ``e = e + 2;``            ` `        ``Console.WriteLine();``        ``}``    ``}` `    ``// Driver code``    ``public` `static` `void` `Main()``    ``{``        ``// change value to decrease or``        ``// increase the height of wave``        ``int` `wave_height = 4;` `        ``// change value to decrease or``        ``// increase the length of wave``        ``int` `wave_length = 4;` `        ``pattern(wave_height, wave_length);``    ``}``}` `// This code is contributed by vt_m.`

## PHP

 `= ``\$x``; ``\$n``--)``                ``echo` `" "``;``            ` `            ``for` `(``\$k` `= 1; ``\$k` `<= ``\$e``; ``\$k``++)``            ``{``                ``if` `(``\$k` `== 1)``                    ``echo` `"/"``;``                ``else` `if` `(``\$k` `== ``\$e``)``                    ``echo` `"\\"``;``                ``else``                    ``echo` `" "``;``            ``}``        ``}` `        ``// incrementing counters value by two``        ``\$x` `= ``\$x` `+ 2;``        ``\$e` `= ``\$e` `+ 2;``        ``echo` `"\n"``;``    ``}``}` `// Driver code``\$wave_height` `= 4;``\$wave_length` `= 4;``pattern(``\$wave_height``, ``\$wave_length``);` `// This code is contributed by Mithun Kumar``?>`

## Javascript

 ``

Output :

```   /\      /\      /\      /\
/  \    /  \    /  \    /  \
/    \  /    \  /    \  /    \
/      \/      \/      \/      \
```

To print numbers in wave form.
Examples :

```Input : wave_height = 4
wave_length = 4
Output :

04 05       04 05       04 05       04 05
03   06     03   06     03   06     03   06
02     07   02     07   02     07   02     07
01       08 01       08 01       08 01       08

Input : wave_height = 2
wave_length = 2
Output :
02     02
01  03 01  03```

## C++

 `// C++ code to print numbers``// in wave form``#include ``using` `namespace` `std;` `// Function definition``void` `pattern(``int` `wave_height, ``int` `wave_length)``{``    ``int` `i, j, k, e, n, count, x, n1, n2;``    ``e = 2;``    ``x = 1;``    ``n1 = wave_height;``    ``n2 = wave_height + 1;` `    ``// for loop for height of wave``    ``for` `(i = 1; i <= wave_height; i++) {``        ``for` `(j = wave_height; j <= wave_height + i; j++) {``            ``cout << ``" "``;``        ``}` `        ``// for loop for wave length``        ``for` `(count = 1; count <= wave_length; count++) {` `            ``// checking for intermediate spaces``            ``for` `(n = (wave_height + wave_height - 2); n >= x; n--)``                ``cout << ``" "``;``            ``for` `(k = 1; k <= e; k++) {``                ``if` `(k == 1)``                    ``cout << ``"0"` `<< n1 << ``" "``;``                ``else` `if` `(k == e)``                    ``cout << ``"0"` `<< n2 << ``" "``;``                ``else``                    ``cout << ``" "``;``            ``}``        ``}` `        ``// incrementing counters value by two``        ``x = x + 2;``        ``e = e + 2;``        ``n1 = wave_height - i;``        ``n2 = wave_height + 1 + i;``        ``cout << endl;``    ``}``}` `// Driver code``int` `main()``{``    ``// change value to decrease or``    ``// increase the height of wave``    ``int` `wave_height = 4;` `    ``// change value to decrease or``    ``// increase the length of wave``    ``int` `wave_length = 4;` `    ``pattern(wave_height, wave_length);` `    ``return` `0;``}`

## Java

 `// Java code to print numbers``// in wave form``import` `java.io.*;` `class` `GFG {` `    ``// Function definition``    ``static` `void` `pattern(``int` `wave_height,``                        ``int` `wave_length)``    ``{``        ``int` `i, j, k, e, n;``        ``int` `count, x, n1, n2;``        ` `        ``e = ``2``;``        ``x = ``1``;``        ``n1 = wave_height;``        ``n2 = wave_height + ``1``;` `        ``// for loop for height``        ``// of wave``        ``for` `(i = ``1``; i <= wave_height; i++)``        ``{``            ``for` `(j = wave_height; j <= wave_height + i; j++)``            ``{``                ``System.out.print(``" "``);``            ``}` `            ``// for loop for wave``            ``// length``            ``for` `(count = ``1``; count <= wave_length; count++)``            ``{` `                ``// checking for intermediate``                ``// spaces``                ``for` `(n = (wave_height + wave_height - ``2``); n >= x; n--)``                    ``System.out.print(``" "``);``            ` `                ``for` `(k = ``1``; k <= e; k++)``                ``{``                    ``if` `(k == ``1``)``                        ``System.out.print(``"0"` `+ n1 + ``" "``);``                    ``else` `if` `(k == e)``                        ``System.out.print(``"0"` `+ n2 + ``" "``);``                    ``else``                        ``System.out.print(``" "``);``                ``}``            ``}` `            ``// incrementing counters``            ``// value by two``            ``x = x + ``2``;``            ``e = e + ``2``;``            ``n1 = wave_height - i;``            ``n2 = wave_height + ``1` `+ i;``            ` `            ``System.out.println();``        ``}``    ``}` `    ``// Driver code``    ``public` `static` `void` `main(String args[])``    ``{``        ``// change value to decrease or``        ``// increase the height of wave``        ``int` `wave_height = ``4``;` `        ``// change value to decrease or``        ``// increase the length of wave``        ``int` `wave_length = ``4``;` `        ``pattern(wave_height, wave_length);``    ``}``}` `// This code is contributed by Nikita Tiwari.`

## Python3

 `# Python 3 code to print numbers``# in wave form` `# Function definition``def` `pattern( wave_height, wave_length) :` `    ``e ``=` `2``    ``x ``=` `1``    ``n1 ``=` `wave_height``    ``n2 ``=` `wave_height ``+` `1` `    ``# for loop for height``    ``# of wave``    ``for` `i ``in` `range``(``1``, wave_height ``+` `1``) :``    ` `        ``for` `j ``in` `range``( wave_height, wave_height ``+` `i ``+` `1``) :``            ``print``( ``" "``, end ``=``"")``        ` `        ` `        ``# for loop for wave``        ``# length``        ``for` `count ``in` `range``(``1``, wave_length ``+` `1``) :``        ` `            ``# checking for intermediate``            ``# spaces``            ``for` `n ``in` `range``((wave_height ``+` `wave_height ``-` `2``), x ``-` `1``, ``-``1``) :``                ``print``( ``" "``, end ``=``"")``            ` `            ``for` `k ``in` `range``(``1``, e ``+` `1``) :``            ` `                ``if` `(k ``=``=` `1``) :``                    ``print``(``"0"``, n1, ``" "``, end ``=``"")``                ``elif` `(k ``=``=` `e) :``                    ``print``(``"0"``, n2, ``" "``, end ``=``"")``                ``else` `:``                    ``print``(``" "``, end ``=``"")        ``                    ` `        ``# incrementing counters value``        ``# by two``        ``x ``=` `x ``+` `2``        ``e ``=` `e ``+` `2``        ``n1 ``=` `wave_height ``-` `i``        ``n2 ``=` `wave_height ``+` `1` `+` `i``        ` `        ``print``()``        ` `# Driver code` `# change value to decrease or``# increase the height of wave``wave_height ``=` `4` `# change value to decrease or``# increase the length of wave``wave_length ``=` `4` `pattern(wave_height, wave_length)` `# This code is contributed by Nikita Tiwari.`

## C#

 `// C# code to print numbers``// in wave form``using` `System;` `class` `GFG``{``    ` `    ``// Function definition``    ``static` `void` `pattern(``int` `wave_height,``                        ``int` `wave_length)``    ``{``        ``int` `i, j, k, e, n;``        ``int` `count, x, n1, n2;``        ` `        ``e = 2;``        ``x = 1;``        ``n1 = wave_height;``        ``n2 = wave_height + 1;` `        ``// for loop for``        ``// height of wave``        ``for` `(i = 1; i <= wave_height; i++)``        ``{``            ``for` `(j = wave_height;``                 ``j <= wave_height + i; j++)``            ``{``                ``Console.Write(``" "``);``            ``}` `            ``// for loop for``            ``// wave length``            ``for` `(count = 1;``                 ``count <= wave_length; count++)``            ``{` `                ``// checking for intermediate``                ``// spaces``                ``for` `(n = (wave_height +``                          ``wave_height - 2);``                     ``n >= x; n--)``                    ``Console.Write(``" "``);``            ` `                ``for` `(k = 1; k <= e; k++)``                ``{``                    ``if` `(k == 1)``                        ``Console.Write(``"0"` `+ n1 + ``" "``);``                    ``else` `if` `(k == e)``                        ``Console.Write(``"0"` `+ n2 + ``" "``);``                    ``else``                        ``Console.Write(``" "``);``                ``}``            ``}` `            ``// incrementing counters``            ``// value by two``            ``x = x + 2;``            ``e = e + 2;``            ``n1 = wave_height - i;``            ``n2 = wave_height + 1 + i;``            ` `            ``Console.WriteLine();``        ``}``    ``}` `    ``// Driver code``    ``static` `public` `void` `Main ()``    ``{``        ` `        ``// change value to decrease or``        ``// increase the height of wave``        ``int` `wave_height = 4;` `        ``// change value to decrease or``        ``// increase the length of wave``        ``int` `wave_length = 4;` `        ``pattern(wave_height, wave_length);``    ``}``}` `// This code is contributed by ajit.`

## PHP

 `= ``\$x``; ``\$n``--)``                       ` `                ``echo` `" "``;``                ` `            ``for` `(``\$k` `= 1; ``\$k` `<= ``\$e``; ``\$k``++)``            ``{``                ``if` `(``\$k` `== 1)``                    ``echo` `"0"``.``\$n1``.``" "``;``                ``else` `if` `(``\$k` `== ``\$e``)``                    ``echo` `"0"``.``\$n2``.``" "``;``                ``else``                    ``echo` `" "``;``            ``}``        ``}` `        ``// incrementing counters value``        ``// by two``        ``\$x` `= ``\$x` `+ 2;``        ``\$e` `= ``\$e` `+ 2;``        ``\$n1` `= ``\$wave_height` `- ``\$i``;``        ``\$n2` `= ``\$wave_height` `+ 1 + ``\$i``;``        ``echo` `"\n"``;``    ``}``}` `// Driver code``\$wave_height` `= 4;``\$wave_length` `= 4;``pattern(``\$wave_height``, ``\$wave_length``);` `// This code is contributed by Mithun Kumar``?>`

## Javascript

 ``

Output :

```   04 05       04 05       04 05       04 05
03   06     03   06     03   06     03   06
02     07   02     07   02     07   02     07
01       08 01       08 01       08 01       08 ```

Program to print wave pattern using letters .
Examples :

```Input : wave_height = 4
wave_length = 4
Output :

D E       L M       T U       B C
C   F     K   N     S   V     A   D
B     G   J     O   R     W   Z     E
A       H I       P Q       X Y       F```

## C++

 `#include ``using` `namespace` `std;` `// Function definition``void` `pattern(``int` `wave_height, ``int` `wave_length)``{``    ``int` `i, j, k, e, n, count, x;``    ``e = 2;``    ``x = 1;` `    ``int` `c1 = ``'A'` `+ wave_height - 1;``    ``int` `c2 = ``'A'` `+ wave_height;` `    ``// for loop for height of wave``    ``for` `(i = 1; i <= wave_height; i++) {``        ``for` `(j = wave_height; j <= wave_height + i; j++) {``            ``cout << ``" "``;``        ``}` `        ``// for loop for wave length``        ``for` `(count = 1; count <= wave_length; count++) {` `            ``// checking for intermediate spaces``            ``for` `(n = (wave_height + wave_height - 2); n >= x; n--)``                ``cout << ``" "``;``            ``for` `(k = 1; k <= e; k++) {``                ``if` `(k == 1)``                    ``cout << (``char``)c1 << ``" "``;``                ``else` `if` `(k == e)``                    ``cout << (``char``)c2 << ``" "``;``                ``else``                    ``cout << ``" "``;``            ``}``            ``c1 = c1 + wave_height * 2;``            ``c2 = c2 + wave_height * 2;` `            ``// checking the limit``            ``if` `(c1 > ``'Z'``)``                ``c1 = c1 - 26;``            ``if` `(c2 > ``'Z'``)``                ``c2 = c2 - 26;``        ``}` `        ``// incrementing counters value by two``        ``x = x + 2;``        ``e = e + 2;``        ``c1 = ``'A'` `+ wave_height - i - 1;``        ``c2 = ``'A'` `+ wave_height + i;``        ``cout << endl;``    ``}``}` `// Driver code``int` `main()``{``    ``// change value to decrease or increase``    ``// the height of wave``    ``int` `wave_height = 4;` `    ``// change value to decrease or increase``    ``// the length of wave``    ``int` `wave_length = 4;` `    ``pattern(wave_height, wave_length);` `    ``return` `0;``}`

## Java

 `// Java Program to print``// wave pattern``import` `java.io.*;` `class` `GFG {` `    ``// Function definition``    ``static` `void` `pattern(``int` `wave_height,``                        ``int` `wave_length)``    ``{``        ``int` `i, j, k, e, n, count, x;``        ``e = ``2``;``        ``x = ``1``;` `        ``int` `c1 = ``'A'` `+ wave_height - ``1``;``        ``int` `c2 = ``'A'` `+ wave_height;` `        ``// for loop for height``        ``// of wave``        ``for` `(i = ``1``; i <= wave_height; i++)``        ``{``            ``for` `(j = wave_height; j <= wave_height + i; j++)``            ``{``                ``System.out.print(``" "``);``            ``}` `            ``// for loop for wave``            ``// length``            ``for` `(count = ``1``; count <= wave_length; count++)``            ``{``                ``// checking for intermediate``                ``// spaces``                ``for` `(n = (wave_height + wave_height - ``2``); n >= x; n--)``                    ``System.out.print(``" "``);``                    ` `                ``for` `(k = ``1``; k <= e; k++)``                ``{``                    ``if` `(k == ``1``)``                        ``System.out.print((``char``)c1 + ``" "``);``                    ``else` `if` `(k == e)``                        ``System.out.print((``char``)c2 + ``" "``);``                    ``else``                        ``System.out.print(``" "``);``                ``}``                ` `                ``c1 = c1 + wave_height * ``2``;``                ``c2 = c2 + wave_height * ``2``;` `                ``// checking the limit``                ``if` `(c1 > ``'Z'``)``                    ``c1 = c1 - ``26``;``                ` `                ``if` `(c2 > ``'Z'``)``                    ``c2 = c2 - ``26``;``            ``}` `            ``// incrementing counters``            ``// value by two``            ``x = x + ``2``;``            ``e = e + ``2``;``            ``c1 = ``'A'` `+ wave_height - i - ``1``;``            ``c2 = ``'A'` `+ wave_height + i;``            ` `            ``System.out.println();``        ``}``    ``}` `    ``// Driver code``    ``public` `static` `void` `main(String args[])``    ``{``        ``// change value to decrease or``        ``// increase the height of wave``        ``int` `wave_height = ``4``;` `        ``// change value to decrease or``        ``// increase the length of wave``        ``int` `wave_length = ``4``;` `        ``pattern(wave_height, wave_length);``    ``}``}` `// This code is contributed by Nikita Tiwari.`

## Python3

 `# Python3 program to print``# the wave pattern` `# Function definition``def` `pattern(wave_height, wave_length) :``    ``e ``=` `2``    ``x ``=` `1` `    ``c1 ``=` `ord``(``'A'``) ``+` `wave_height ``-` `1``    ``c2 ``=` `ord``(``'A'``) ``+` `wave_height` `    ``# for loop for height``    ``# of wave``    ``for` `i ``in` `range``(``1``, wave_height ``+` `1``) :``    ` `        ``for` `j ``in` `range``(wave_height, wave_height ``+` `i ``+` `1` `):``            ``print``( ``" "``, end ``=` `"")``        ` `        ` `        ``# for loop for wave``        ``# length``        ``for` `count ``in` `range``(``1``, wave_length ``+` `1``) :``        ` `            ``# checking for intermediate``            ``# spaces``            ``for` `n ``in` `range``((wave_height ``+` `wave_height ``-` `2``), x ``-` `1``, ``-``1``) :``                ``print``(``" "``, end ``=` `"")``            ` `            ``for` `k ``in` `range``(``1``, e ``+` `1``) :``            ` `                ``if` `(k ``=``=` `1``) :``                    ``print``((``chr``)(c1), ``" "``, end ``=` `"")``                ``elif` `(k ``=``=` `e) :``                    ``print``((``chr``)(c2), ``" "``, end ``=` `"")``                ``else` `:``                    ``print``(``" "``, end ``=` `"")``            ` `            ``c1 ``=` `c1 ``+` `wave_height ``*` `2``            ``c2 ``=` `c2 ``+` `wave_height ``*` `2` `            ``# checking the limit``            ``if` `(c1 > ``ord``(``'Z'``)) :``                ``c1 ``=` `c1 ``-` `26``                ` `            ``if` `(c2 > ``ord``(``'Z'``)) :``                ``c2 ``=` `c2 ``-` `26``        ` `        ``# incrementing counters``        ``# value by two``        ``x ``=` `x ``+` `2``;``        ``e ``=` `e ``+` `2``        ``c1 ``=` `ord``(``'A'``) ``+` `wave_height ``-` `i ``-` `1``        ``c2 ``=` `ord``(``'A'``) ``+` `wave_height ``+` `i` `        ``print``()``    ` `# Driver code` `# change value to decrease or``# increase the height of wave``wave_height ``=` `4` `# change value to decrease or``# increase the length of wave``wave_length ``=` `4` `pattern(wave_height, wave_length)` `# This code is contributed by Nikita Tiwari.`

## C#

 `// C# Program to print``// wave pattern``using` `System;` `class` `GFG``{``// Function definition``static` `void` `pattern(``int` `wave_height,``                    ``int` `wave_length)``{``    ``int` `i, j, k, e, n, count, x;``    ``e = 2;``    ``x = 1;` `    ``int` `c1 = ``'A'` `+ wave_height - 1;``    ``int` `c2 = ``'A'` `+ wave_height;` `    ``// for loop for height``    ``// of wave``    ``for` `(i = 1; i <= wave_height; i++)``    ``{``        ``for` `(j = wave_height;``             ``j <= wave_height + i; j++)``        ``{``            ``Console.Write(``" "``);``        ``}` `        ``// for loop for wave``        ``// length``        ``for` `(count = 1;``             ``count <= wave_length; count++)``        ``{``            ``// checking for intermediate``            ``// spaces``            ``for` `(n = (wave_height +``                      ``wave_height - 2);``                 ``n >= x; n--)``                ``Console.Write(``" "``);``                ` `            ``for` `(k = 1; k <= e; k++)``            ``{``                ``if` `(k == 1)``                    ``Console.Write((``char``)c1 + ``" "``);``                ``else` `if` `(k == e)``                    ``Console.Write((``char``)c2 + ``" "``);``                ``else``                    ``Console.Write(``" "``);``            ``}``            ` `            ``c1 = c1 + wave_height * 2;``            ``c2 = c2 + wave_height * 2;` `            ``// checking the limit``            ``if` `(c1 > ``'Z'``)``                ``c1 = c1 - 26;``            ` `            ``if` `(c2 > ``'Z'``)``                ``c2 = c2 - 26;``        ``}` `        ``// incrementing counters``        ``// value by two``        ``x = x + 2;``        ``e = e + 2;``        ``c1 = ``'A'` `+ wave_height - i - 1;``        ``c2 = ``'A'` `+ wave_height + i;``        ` `        ``Console.WriteLine();``    ``}``}` `// Driver code``static` `public` `void` `Main ()``{``    ``// change value to decrease or``    ``// increase the height of wave``    ``int` `wave_height = 4;` `    ``// change value to decrease or``    ``// increase the length of wave``    ``int` `wave_length = 4;` `    ``pattern(wave_height, wave_length);``}``}` `// This code is contributed by ajit`

## PHP

 `= ``\$x``; ``\$n``--)``                       ` `                ``echo` `" "``;``                ` `            ``for` `(``\$k` `= 1; ``\$k` `<= ``\$e``; ``\$k``++)``            ``{``                ``if` `(``\$k` `== 1)``                    ``echo` `chr``(``\$c1``).``" "``;``                ``else` `if` `(``\$k` `== ``\$e``)``                    ``echo` `chr``(``\$c2``).``" "``;``                ``else``                    ``echo` `" "``;``            ``}``            ``\$c1` `= ``\$c1` `+ ``\$wave_height` `* 2;``            ``\$c2` `= ``\$c2` `+ ``\$wave_height` `* 2;` `            ``// checking the limit``            ``if` `(``\$c1` `> 90)``                ``\$c1` `= ``\$c1` `- 26;``            ``if` `(``\$c2` `> 90)``                ``\$c2` `= ``\$c2` `- 26;``        ``}` `        ``// incrementing counters value``        ``// by two``        ``\$x` `= ``\$x` `+ 2;``        ``\$e` `= ``\$e` `+ 2;``        ``\$c1` `= 65 + ``\$wave_height` `- ``\$i` `- 1;``        ``\$c2` `= 65 + ``\$wave_height` `+ ``\$i``;``        ``echo` `"\n"``;``    ``}``}` `// Driver code``\$wave_height` `= 4;``\$wave_length` `= 4;``pattern(``\$wave_height``, ``\$wave_length``);` `// This code is contributed by Mithun Kumar``?>`

## Javascript

 ``

Output :

```   D E       L M       T U       B C
C   F     K   N     S   V     A   D
B     G   J     O   R     W   Z     E
A       H I       P Q       X Y       F```

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