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Golang Program to find the position of the rightmost set bit
Examples
Consider n = 20(00010100)
Now return log2(20 & -20) => 2+1 => 3
Approach to solve this problem
Step 1 − Define a method, where n and is an argument, return type is int.
Step 2 − Return log2(n & -n)+1.
Example
package main
import (
"fmt"
"math"
"strconv"
)
func FindRightMostSetBit(n int) int {
if (n & 1) != 0{
return 1
}
return int(math.Log2(float64(n & -n))) + 1
}
func main(){
var n = 20
fmt.Printf("Binary of %d is: %s.\n", n, strconv.FormatInt(int64(n), 2))
fmt.Printf("Position of the rightmost set bit of the given number %d is %d.\n", n, FindRightMostSetBit(n))
}Output
Binary of 20 is: 10100. Position of the rightmost set bit of the given number 20 is 3.
Updated on 17-Mar-2021 11:11:57
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