Add solution and test-cases for problem 2683

Author: 0xff-dev

leetcode/2601-2700/2683.Neighboring-Bitwise-XOR/README.md

@@ -0,0 +1,51 @@
+# [2683.Neighboring Bitwise XOR][title]
+
+## Description
+A **0-indexed** array `derived` with length n is derived by computing the **bitwise XOR** (⊕) of adjacent values in a **binary array** `original` of length `n`.
+
+Specifically, for each index `i` in the range `[0, n - 1]`:
+
+- If `i = n - 1`, then `derived[i] = original[i] ⊕ original[0]`.
+- Otherwise, `derived[i] = original[i] ⊕ original[i + 1]`.
+
+Given an array `derived`, your task is to determine whether there exists a **valid binary array** `original` that could have formed `derived`.
+
+Return **true** if such an array exists or **false** otherwise.
+
+- A binary array is an array containing only **0**'s and **1**'s
+
+**Example 1:**
+
+```
+Input: derived = [1,1,0]
+Output: true
+Explanation: A valid original array that gives derived is [0,1,0].
+derived[0] = original[0] ⊕ original[1] = 0 ⊕ 1 = 1 
+derived[1] = original[1] ⊕ original[2] = 1 ⊕ 0 = 1
+derived[2] = original[2] ⊕ original[0] = 0 ⊕ 0 = 0
+```
+
+**Example 2:**
+
+```
+Input: derived = [1,1]
+Output: true
+Explanation: A valid original array that gives derived is [0,1].
+derived[0] = original[0] ⊕ original[1] = 1
+derived[1] = original[1] ⊕ original[0] = 1
+```
+
+**Example 3:**
+
+```
+Input: derived = [1,0]
+Output: false
+Explanation: There is no valid original array that gives derived.
+```
+
+## 结语
+
+如果你同我一样热爱数据结构、算法、LeetCode，可以关注我 GitHub 上的 LeetCode 题解：[awesome-golang-algorithm][me]
+
+[title]: https://leetcode.com/problems/neighboring-bitwise-xor
+[me]: https://github.com/kylesliu/awesome-golang-algorithm

leetcode/2601-2700/2683.Neighboring-Bitwise-XOR/Solution.go

@@ -1,5 +1,9 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+func Solution(derived []int) bool {
+	ans := 0
+	for _, n := range derived {
+		ans ^= n
+	}
+	return ans == 0
 }

leetcode/2601-2700/2683.Neighboring-Bitwise-XOR/Solution_test.go

@@ -10,12 +10,12 @@ func TestSolution(t *testing.T) {
 	//	测试用例
 	cases := []struct {
 		name   string
-		inputs bool
+		inputs []int
 		expect bool
 	}{
-		{"TestCase", true, true},
-		{"TestCase", true, true},
-		{"TestCase", false, false},
+		{"TestCase1", []int{1, 1, 0}, true},
+		{"TestCase2", []int{1, 1}, true},
+		{"TestCase3", []int{1, 0}, false},
 	}
 
 	//	开始测试
@@ -30,10 +30,10 @@ func TestSolution(t *testing.T) {
 	}
 }
 
-//	压力测试
+// 压力测试
 func BenchmarkSolution(b *testing.B) {
 }
 
-//	使用案列
+// 使用案列
 func ExampleSolution() {
 }