Divide a string in N equal parts

1.6

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<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 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"); /* newline separator for different parts */
       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;
}

Java

// Java program to divide a string in n equal parts

public 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(); /* newline separator for different parts */
	       System.out.print(str.charAt(i));
	   }
	}
	
	// Driver Method
	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);
	}
}

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


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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