HackerRank C Solution - Digit Frequency

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 

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

int main() {

    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    char s[1000];
    int arr[10] = {0};
    scanf("%s",s);
    
    for(int i = 0; i < strlen(s); i ++) {
        int j = s[i] - 48;
        if( j >= 0 && j <= 9 ) {
            arr[j]++;
        }
    }
    
    for(int i = 0; i < 10; i ++) {
        printf("%d ", arr[i]);
    }
    return 0;
}