Bit Spreading Interleave Bits with Zeros

Code

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

uint16_t spread_bits(uint8_t val) {
    // Your logic here
    uint16_t result = val;

    //Shift the top 4 bits of the byte left by 4 positions.
    result = (result | (result << 4)) & 0x0F0F;

    //Shift by 2 and OR.
    result = (result | (result << 2)) & 0x3333;

    //Shift by 1 and OR.
    result = (result | (result << 1)) & 0x5555;

    return result;
}

int main() {
    uint8_t val;
    scanf("%hhu", &val);

    uint16_t result = spread_bits(val);
    printf("%u", result);
    return 0;
}

Solving Approach