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
• Python

// 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; }

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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