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
    if (reg == target)
    {
        return 1;
    }

    uint32_t doubled = (((uint32_t) reg) << 16) | reg;
    for(int i=1; i<16; i++)
    {
        if(((doubled >> i) & 0xFFFF) == 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;
}