Compress Interleaved Bits Reverse Bit Spreading

Code

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

uint8_t compress_bits(uint16_t val) {
    // Your logic here
 // extract 
 uint8_t res;
 for(uint8_t i=8 ; i>0 ;i--)
 {
    uint8_t value1 = ((val>>(2*(i-1)))& 0x01); 
    res &= ~(0x01<<(i-1));
    res |= (value1 << (i-1));
 }
    return res;
}

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

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

Solving Approach