Compress Interleaved Bits Reverse Bit Spreading

Code

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

uint8_t compress_bits(uint16_t val) {
    // Your logic here
    uint8_t compressed_value = 0;

    // for(int i=0;i<16;i++){
    //     if(i%2 == 0){
    //         uint8_t bit = (val >> i)&1;
    //         compressed_value = (compressed_value | (bit << (i/2)));
    //     }
    // }
    // or
    for(int i=0;i<8;i++){
        uint8_t bit = (val >> i*2)&1;
        compressed_value = (compressed_value | (bit << i));
    }
        
    return compressed_value;
}

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

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

Solving Approach