Divide a string in N equal parts
Difficulty Level: Rookie
Question:
Write a program to print N equal parts of a given string.
Solution:
1) Get the size of the string using string function strlen() (present in string.h)
2) Get size of a part.
part_size = string_length/n
3) Loop through the input string. In loop, if index becomes multiple of part_size then put a part separator(“\n”)
Implementation:
C++
// C++ program to divide a string // in n equal parts #include<iostream> #include<string.h> using namespace std; class gfg { // Function to print n equal parts of str public: void divideString(char str[], int n) { int str_size = strlen(str); int i; int part_size; // Check if string can be divided in // n equal parts if (str_size % n != 0) { cout<<"Invalid Input: String size"; cout<<" is not divisible by n"; return; } // Calculate the size of parts to // find the division points part_size = str_size / n; for (i = 0; i< str_size; i++) { if (i % part_size == 0) cout<<endl; cout<< str[i]; } } }; // Driver code int main() { gfg g; // length od string is 28 char str[] = "a_simple_divide_string_quest"; // Print 4 equal parts of the string g.divideString(str, 4); return 0; } // This code is contributed by SoM15242 |
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C
// C program to divide a string // in n equal parts #include<stdio.h> #include<string.h> // Function to print n equal parts of str void divideString(char *str, int n) { int str_size = strlen(str); int i; int part_size; // Check if string can be divided in // n equal parts if (str_size % n != 0) { printf("Invalid Input: String size"); printf(" is not divisible by n"); return; } // Calculate the size of parts to // find the division points part_size = str_size / n; for (i = 0; i< str_size; i++) { if (i % part_size == 0) printf("\n"); printf("%c", str[i]); } } int main() { // length od string is 28 char *str = "a_simple_divide_string_quest"; // Print 4 equal parts of the string divideString(str, 4); getchar(); return 0; } |
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Java
// Java program to divide a string // in n equal parts class GFG { // Method to print n equal parts of str static void divideString(String str, int n) { int str_size = str.length(); int part_size; // Check if string can be divided in // n equal parts if (str_size % n != 0) { System.out.println("Invalid Input: String size" + "is not divisible by n"); return; } // Calculate the size of parts to find // the division points part_size = str_size / n; for (int i = 0; i< str_size; i++) { if(i % part_size == 0) System.out.println(); System.out.print(str.charAt(i)); } } // Driver Code public static void main(String[] args) { // length od string is 28 String str = "a_simple_divide_string_quest"; // Print 4 equal parts of the string divideString(str, 4); } } |
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Python
# Python program to print n equal parts of string # Function to print n equal parts of string def divideString(string, n): str_size = len(string) # Check if string can be divided in n equal parts if str_size % n != 0: print "Invalid Input: String size is not divisible by n" return # Calculate the size of parts to find the division points part_size = str_size/n k = 0 for i in string: if k%part_size==0: print "\n", print i, k += 1 # Driver program to test the above function # Length of string is 28 string = "a_simple_divide_string_quest" # Print 4 equal parts of the string divideString(string, 4) # This code is contributed by Bhavya Jain |
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C#
// C# program to divide a string // in n equal parts using System; class GFG { // Method to print n // equal parts of str static void divideString(String str, int n) { int str_size = str.Length; int part_size; // Check if string // can be divided in // n equal parts if (str_size % n != 0) { Console.Write("Invalid Input: String size" + "is not divisible by n"); return; } // Calculate the size // of parts to find // the division points part_size = str_size / n; for (int i = 0; i< str_size; i++) { if(i % part_size == 0) Console.WriteLine(); Console.Write(str[i]); } } // Driver Code static void Main() { // length od string is 28 String str = "a_simple_divide_string_quest"; // Print 4 equal parts of the string divideString(str, 4); } } // This code is contributed by Anuj_67 |
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PHP
<?php // PHP program to divide a string // in n equal parts // Function to print n // equal parts of str function divideString($str, $n) { $str_size = strlen($str); $i; $part_size; // Check if string can be divided // in n equal parts if ($str_size % $n != 0) { echo "Invalid Input: String size"; echo " is not divisible by n"; return; } // Calculate the size of parts to // find the division point $part_size = $str_size / $n; for ($i = 0; $i< $str_size; $i++) { if ($i % $part_size == 0) echo "\n"; echo $str[$i]; } } // Driver Code // length od string is 28 $str = "a_simple_divide_string_quest"; // Print 4 equal parts of the string divideString($str, 4); // This code is contributed by ajit. ?> |
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Output:
a_simpl e_divid e_strin g_quest
In above solution, n equal parts of the string are only printed. If we want individual parts to be stored then we need to allocate part_size + 1 memory for all N parts (1 extra for string termination character ‘\0’), and store the addresses of the parts in an array of character pointers.
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