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 len = sizeof(uint16_t)*8;
    do {
        if (reg == target) return 1;
        else reg = (reg >> 1) | ((reg & 1U) << 15);
    } while (len--);
    
    return 0;
}

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