33. Detect Circular Pattern Match

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

uint8_t is_circular_match(uint16_t reg, uint16_t target) {
    // Your code here
    int match=0;
    for(int i=0; i<16; i++){
        uint16_t fd=reg&1;
        reg=reg>>1;
        reg=reg|(fd<<15);
        if(reg==target){
            match=1;
        }
    }
    for(int i=0; i<16; i++){
        uint16_t ld=(reg>>15)&1;
        reg=reg<<1;
        reg=reg|ld;
        if(reg==target){
            match=1;
        }
    }
    return match;
}

int main() {
    uint16_t reg, target;
    scanf("%hu %hu", &reg, &target);
    printf("%hhu", is_circular_match(reg, target));
    return 0;
}