# Convert a String into a square matrix grid of characters

Given a string of length L. The task is to convert the string into a grid.

• No. of rows >= floor(√L)
• No. of columns <= ceil(√L)

Examples:

```Input : str = "haveaniceday"
Output :  have
anic
eday

Explanation: sqrt(12) = 3.46, Rows = 4, Columns = 3

Input :str = "geeksforgeeks"
Output : geek
forg
geek
s
```

Note: Ensure that row*column >= length of the string

## Recommended: Please try your approach on {IDE} first, before moving on to the solution.

Approach:

1. If (row * column) is less than L then row is equally assigned to column.
2. Make a 2d character array of (rows * column) size.
3. Assign the values to the 2d character array from the characters of the given string.
4. Print the 2d character array.

Below is the implementation of the above approach.

## C++

 `#include ` `using` `namespace` `std; ` ` `  `// Function to string into grid form ` `void` `gridStr(string str) ` `{ ` `    ``int` `l = str.length(); ` `    ``int` `k = 0, row, column; ` `    ``row = ``floor``(``sqrt``(l)); ` `    ``column = ``ceil``(``sqrt``(l)); ` ` `  `    ``if` `(row * column < l) ` `        ``row = column; ` ` `  `    ``char` `s[row][column]; ` `    ``// convert the string into grid ` `    ``for` `(``int` `i = 0; i < row; i++) { ` `        ``for` `(``int` `j = 0; j < column; j++) { ` `            ``s[i][j] = str[k]; ` `            ``k++; ` `        ``} ` `    ``} ` ` `  `    ``// Printing the grid ` `    ``for` `(``int` `i = 0; i < row; i++) { ` `        ``for` `(``int` `j = 0; j < column; j++) { ` `            ``if` `(s[i][j] == ``'\0'``) ` `                ``break``; ` `            ``cout << s[i][j]; ` `        ``} ` `        ``cout << endl; ` `    ``} ` `} ` ` `  `// Driver code ` `int` `main() ` `{ ` `    ``string str = ``"GEEKSFORGEEKS"``; ` `    ``gridStr(str); ` `     `  `    ``return` `0; ` `} `

## Java

 `// Java implementation of the ` `// above approach ` `class` `GFG ` `{ ` ` `  `    ``// Function to string into grid form ` `    ``static` `void` `gridStr(String str) ` `    ``{ ` `        ``int` `l = str.length(); ` `        ``int` `k = ``0``, row, column; ` `        ``row = (``int``) Math.floor(Math.sqrt(l)); ` `        ``column = (``int``) Math.ceil(Math.sqrt(l)); ` ` `  `        ``if` `(row * column < l) ` `        ``{ ` `            ``row = column; ` `        ``} ` ` `  `        ``char` `s[][] = ``new` `char``[row][column]; ` `         `  `        ``// convert the string into grid ` `        ``for` `(``int` `i = ``0``; i < row; i++)  ` `        ``{ ` `            ``for` `(``int` `j = ``0``; j < column; j++)  ` `            ``{ ` `                ``if``(k < str.length()) ` `                    ``s[i][j] = str.charAt(k); ` `                ``k++; ` `            ``} ` `        ``} ` ` `  `        ``// Printing the grid ` `        ``for` `(``int` `i = ``0``; i < row; i++)  ` `        ``{ ` `            ``for` `(``int` `j = ``0``; j < column; j++) ` `            ``{ ` `                ``if` `(s[i][j] == ``0``)  ` `                ``{ ` `                    ``break``; ` `                ``} ` `                ``System.out.print(s[i][j]); ` `            ``} ` `            ``System.out.println(``""``); ` `        ``} ` `    ``} ` ` `  `    ``// Driver code ` `    ``public` `static` `void` `main(String[] args) ` `    ``{ ` `        ``String str = ``"GEEKSFORGEEKS"``; ` `        ``gridStr(str); ` `    ``} ` `} ` ` `  `//This code is contributed by Rajput-Ji `

## Python3

 `# Python3 implementation of the ` `# above approach ` ` `  `# From math lib import sqrt, ` `# floor and ceil function ` `from` `math ``import` `sqrt, floor, ceil ` ` `  `# Function to string into grid form  ` `def` `gridStr(string) : ` ` `  `    ``l ``=` `len``(string) ` `    ``k ``=` `0` `     `  `    ``row ``=` `floor(sqrt(l))  ` `    ``column ``=` `ceil(sqrt(l))  ` ` `  `    ``if` `(row ``*` `column < l) : ` `        ``row ``=` `column ` `     `  `    ``s ``=` `[[``0` `for` `j ``in` `range``(column) ]  ` `            ``for` `i ``in` `range``(row)] ` `     `  `    ``# convert the string into grid  ` `    ``for` `i ``in` `range``(row) : ` `        ``for` `j ``in` `range``(column) :  ` `             `  `            ``if` `k >``=` `l : ` `                ``s[i][j] ``=` `" "` `                ``k ``+``=` `1` `                 `  `            ``else` `: ` `                ``s[i][j] ``=` `string[k]  ` `                ``k ``+``=` `1` ` `  `    ``# Printing the grid  ` `    ``for` `i ``in` `range``(row) : ` `        ``for` `j ``in` `range``(column) : ` `            ``if` `s[i][j] ``=``=` `" "` `: ` `                ``break` `                 `  `            ``print``(s[i][j], end ``=` `"") ` `         `  `        ``print``() ` `     `  `# Driver code  ` `if` `__name__ ``=``=` `"__main__"` `: ` ` `  `    ``string ``=` `"GEEKSFORGEEKS"` `     `  `    ``gridStr(string) ` ` `  `# This code is contributed by Ryuga  `

## C#

 `// C# implementation of the ` `// above approach ` `using` `System; ` ` `  `class` `GFG ` `{ ` ` `  `    ``// Function to string into grid form ` `    ``static` `void` `gridStr(String str) ` `    ``{ ` `        ``int` `l = str.Length; ` `        ``int` `k = 0, row, column; ` `        ``row = (``int``) Math.Floor(Math.Sqrt(l)); ` `        ``column = (``int``) Math.Ceiling(Math.Sqrt(l)); ` ` `  `        ``if` `(row * column < l) ` `        ``{ ` `            ``row = column; ` `        ``} ` ` `  `        ``char` `[,]s = ``new` `char``[row,column]; ` `         `  `        ``// convert the string into grid ` `        ``for` `(``int` `i = 0; i < row; i++)  ` `        ``{ ` `            ``for` `(``int` `j = 0; j < column; j++)  ` `            ``{ ` `                ``if``(k < str.Length) ` `                    ``s[i,j] = str[k]; ` `                ``k++; ` `            ``} ` `        ``} ` ` `  `        ``// Printing the grid ` `        ``for` `(``int` `i = 0; i < row; i++)  ` `        ``{ ` `            ``for` `(``int` `j = 0; j < column; j++) ` `            ``{ ` `                ``if` `(s[i, j] == 0)  ` `                ``{ ` `                    ``break``; ` `                ``} ` `                ``Console.Write(s[i, j]); ` `            ``} ` `            ``Console.WriteLine(``""``); ` `        ``} ` `    ``} ` ` `  `    ``// Driver code ` `    ``public` `static` `void` `Main() ` `    ``{ ` `        ``String str = ``"GEEKSFORGEEKS"``; ` `        ``gridStr(str); ` `    ``} ` `} ` ` `  `/* This code contributed by PrinciRaj1992 */`

## PHP

 ` `

Output:

```GEEK
SFOR
GEEK
S
```

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