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
    // read
    uint16_t f_reg = reg;
    for(int i=0;i<16;i++){
        // We do a left rotation and check each time
        uint16_t msb = f_reg >> 15;
        f_reg <<= 1;
        f_reg |= msb;
        if(f_reg == 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;
}