94. Remove Duplicate Characters from a String

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

void remove_duplicates(char *str) {
	//Your logic here
        int hash[256]={0};
        int read=0,write=0;
        while (str[read]!='\0'){
            unsigned char c= (uint8_t)str[read];
            if (!hash[c]){
                hash[c]=1;
                str[write]=str[read];
                write++;
            }
            read++;
           
        }
        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;
}