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
    uint16_t left_shift = reg;
    uint16_t right_shift = reg;

    if(reg == target){
        return 1;
    }
    for(int n=0;n<16;n++){
        left_shift = left_shift << n | left_shift >> (16-n);
        right_shift = right_shift >> n | right_shift << (16-n);

        if(left_shift == target || right_shift == target){
            return 1;
        }
    }

    return 0;
}

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