Compress Interleaved Bits Reverse Bit Spreading

Code

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

uint8_t compress_bits(uint16_t val) {
    // Your logic here
    val = ((val>>1) | val) & 0x3333; //compress pairs
    val = ((val>>2) | val) & 0x0f0f; //compress nibbles
    val = ((val>>4) | val) & 0x00ff; //compress bytes
    return val;
}

int main() {
    uint16_t val;
    scanf("%hu", &val);

    uint8_t result = compress_bits(val);
    printf("%u", result);
    return 0;
}

Solving Approach