94. Remove Duplicate Characters from a String

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

void remove_duplicates(char *str) {
	//Your logic here

    int seen[128] = {0};
    char *read = str;
    char *write = str;

    while(*read != '\0')
    {
        if((seen[(int)*read]) == 0)
        {
            seen[(int)*read] = 1;
            *write = *read;
            write++;
        }
        read++;
    }

    *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;
}