Go - Two ways to reverse bits

21 Oct 2022 Go

When input is 32 bits unsigned integer, there are two ways to reverse bits.

Solution 1

func reverseBits(num uint32) uint32 {
    return bits.Reverse32(num)
}

Solution 2

func reverseBits(num uint32) uint32 {
    var result uint32   
    for i := 0; i < 32; i++ {
        result += num >> i << 31 >> i
    }
    return result
}

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