Detect Circular Pattern Match

Code

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




uint8_t is_circular_match(uint16_t reg, uint16_t target) {
    // Your code here
    if(reg == target)
    {
        return 1;
    }

    uint16_t mask = 1U << 15;
    for(int i=1; i<16; i++)
    {
        //rotate
        if(reg & 1U)
        {
            reg >>= 1;
            reg |= mask;
        }
        else
        {
            reg >>= 1;
        }
        if(reg == target)
        {
            return true;
        }
    }
    return 0;
}

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

Solving Approach