33. Detect Circular Pattern Match

Code

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

uint8_t is_circular_match(uint16_t reg, uint16_t target) {
    // reulst -> 0 = No match ; 1 = Match
    uint8_t result = 0; 

    for(uint8_t i = 0; i < 16; i++)
    {
        if(reg == (target & 0xFFFF))
        {
            result = 1; // Pattern match
            break;
        }


        target = (target << 1) | (target >> 15);
        target &= 0xFFFF;

    }


    return result;
}

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