Digit Frequency in C Hackerrank solution

 

Given a string, , consisting of alphabets and digits, find the frequency of each digit in the given string.

Input Format

The first line contains a string,  which is the given number.

Constraints

All the elements of num are made of english alphabets and digits.

Output Format

Print ten space-separated integers in a single line denoting the frequency of each digit from  to .

Sample Input 0

a11472o5t6

Sample Output 0

0 2 1 0 1 1 1 1 0 0 

Explanation 0

In the given string:

•  occurs two times.
•  and  occur one time each.
• The remaining digits  and  don't occur at all.

Sample Input 1

lw4n88j12n1

Sample Output 1

0 2 1 0 1 0 0 0 2 0 

Sample Input 2

1v88886l256338ar0ekk

Sample Output 2

1 1 1 2 0 1 2 0 5 0 

Solution

#include <stdio.h>
int main()
{
    char *s;
    s = malloc(1024 * sizeof(char));
    scanf("%s", s);
    s = realloc(s, strlen(s) + 1);
    int len = strlen(s), i;
    int arr[10];
    for(i = 0; i < 10; i++)
        arr[i] = 0;
    for(i = 0; i < len; i++) {
        if(s[i] >= '0' && s[i] <= '9') {
            arr[(int)(s[i] - '0')]++;
        }
    }
    for(i = 0; i < 10; i++)
        printf("%d ", arr[i]);
    printf("\n");
    free(s);
    return 0;
}