Remove Duplicate Characters from a String

Code

#include <stdio.h>
#include <stdint.h>
#include <string.h>
void remove_duplicates(char *str) 
{
	int i,j;
    for(i=0;str[i];i++)
    {
        int cnt=0;
        for(j=i+1;str[j];j++)
        {
            if(str[i]==str[j])
            {
                cnt++;
                if(cnt>0)
                {
                    memmove(str+j,str+j+1,strlen(str+j+1)+1);
                    cnt=0;
                }
            }
        }
    }
}

int main() {
    char str[101];
    fgets(str, sizeof(str), stdin);

    // Remove newline
    uint8_t i = 0;
    while (str[i]) 
    {
        if (str[i] == '\n') 
        {
            str[i] = '\0';
            break;
        }
        i++;
    }

    remove_duplicates(str);
    printf("%s", str);
    return 0;
}

Solving Approach

 

 

 

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Input

programming

Expected Output

progamin