init commit

archive/algorithm/leetcode/268.go

@@ -0,0 +1,14 @@
+package main
+
+func missingNumber(nums []int) int {
+	ret := 0
+	len := len(nums)
+	for i := 0; i < len; i++ {
+		ret = ret ^ i ^ nums[i]
+	}
+	return ret ^ len
+}
+
+func main() {
+	println(missingNumber([]int{9, 6, 4, 2, 3, 5, 7, 0, 1}))
+}