Merge pull request #1096 from 0xff-dev/2425

Add solution and test-cases for problem 2425

Author: 6boris

leetcode/2401-2500/2425.Bitwise-XOR-of-All-Pairings/README.md

@@ -1,28 +1,31 @@
 # [2425.Bitwise XOR of All Pairings][title]
 
-> [!WARNING|style:flat]
-> This question is temporarily unanswered if you have good ideas. Welcome to [Create Pull Request PR](https://github.com/kylesliu/awesome-golang-algorithm)
-
 ## Description
+You are given two **0-indexed** arrays, `nums1` and `nums2`, consisting of non-negative integers. There exists another array, `nums3`, which contains the bitwise XOR of **all pairings** of integers between `nums1` and `nums2` (every integer in `nums1` is paired with every integer in `nums2` **exactly once**).
+
+Return the **bitwise XOR** of all integers in `nums3`.
 
 **Example 1:**
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
+Input: nums1 = [2,1,3], nums2 = [10,2,5,0]
+Output: 13
+Explanation:
+A possible nums3 array is [8,0,7,2,11,3,4,1,9,1,6,3].
+The bitwise XOR of all these numbers is 13, so we return 13.
 ```
 
-## 题意
-> ...
-
-## 题解
+**Example 2:**
 
-### 思路1
-> ...
-Bitwise XOR of All Pairings
-```go
 ```
-
+Input: nums1 = [1,2], nums2 = [3,4]
+Output: 0
+Explanation:
+All possible pairs of bitwise XORs are nums1[0] ^ nums2[0], nums1[0] ^ nums2[1], nums1[1] ^ nums2[0],
+and nums1[1] ^ nums2[1].
+Thus, one possible nums3 array is [2,5,1,6].
+2 ^ 5 ^ 1 ^ 6 = 0, so we return 0.
+```
 
 ## 结语
 

leetcode/2401-2500/2425.Bitwise-XOR-of-All-Pairings/Solution.go

@@ -1,5 +1,18 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+func Solution(nums1 []int, nums2 []int) int {
+	l1 := len(nums1) & 1
+	l2 := len(nums2) & 1
+	ans := 0
+	if l2 == 1 {
+		for _, n := range nums1 {
+			ans ^= n
+		}
+	}
+	if l1 == 1 {
+		for _, n := range nums2 {
+			ans ^= n
+		}
+	}
+	return ans
 }

leetcode/2401-2500/2425.Bitwise-XOR-of-All-Pairings/Solution_test.go

@@ -9,31 +9,30 @@ import (
 func TestSolution(t *testing.T) {
 	//	测试用例
 	cases := []struct {
-		name   string
-		inputs bool
-		expect bool
+		name         string
+		nums1, nums2 []int
+		expect       int
 	}{
-		{"TestCase", true, true},
-		{"TestCase", true, true},
-		{"TestCase", false, false},
+		{"TestCase1", []int{2, 1, 3}, []int{10, 2, 5, 0}, 13},
+		{"TestCase2", []int{1, 2}, []int{3, 4}, 0},
 	}
 
 	//	开始测试
 	for i, c := range cases {
 		t.Run(c.name+" "+strconv.Itoa(i), func(t *testing.T) {
-			got := Solution(c.inputs)
+			got := Solution(c.nums1, c.nums2)
 			if !reflect.DeepEqual(got, c.expect) {
-				t.Fatalf("expected: %v, but got: %v, with inputs: %v",
-					c.expect, got, c.inputs)
+				t.Fatalf("expected: %v, but got: %v, with inputs: %v %v",
+					c.expect, got, c.nums1, c.nums2)
 			}
 		})
 	}
 }
 
-//	压力测试
+// 压力测试
 func BenchmarkSolution(b *testing.B) {
 }
 
-//	使用案列
+// 使用案列
 func ExampleSolution() {
 }