Remove Duplicate Characters from a String

Code

#include <stdio.h>
#include <stdint.h>

void remove_duplicates(char *str) {
	//Your logic here 
    int i, j, k;

    for(i=0; *(str + i) != '\0'; i++){

        for(j=i+1; *(str + j) != '\0'; j++){

            if(*(str + i) == *(str + j)){

                for(k = j; *(str + k) != '\0'; k++){
                    *(str + k) = *(str + k + 1);
                }
            }
            

        }
    }
}

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