LeetCode: Sum Of All Subset Xor Totals Solution

1/**
2 * @param {number[]} nums
3 * @return {number}
4 */
5var subsetXORSum = function (nums) {
6 let res = 0
7 const N = nums.length
8
9 const recursion = (currentIndex, sum) => {
10 res += sum
11 for (let i = currentIndex; i < N; i++) {
12 sum ^= nums[i]
13 recursion(i + 1, sum)
14 sum ^= nums[i]
15 }
16 }
17
18 recursion(0, 0)
19
20 return res
21}

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leetcode

backtracking

recursion

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