94. Remove Duplicate Characters from a String

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

void remove_duplicates(char *str) {
	//Your logic here
    char cur;
    bool seen = false;
    int write = 0;
    int j;
    for (int i = 0; str[i] != '\0';++i) {
        seen = false;
        j = i-1;
        cur = str[i];
        while(j >= 0) {
            if (str[j] == cur) {
                seen = true;
                break;
            }
            --j;
        }
        if (!seen) {
            str[write] = cur;
            ++write;
        }
    }
    str[write] = '\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;
}