[#3025] test(numberOfPairs): add golang unit test

logs/2025-09.md

@@ -5,7 +5,8 @@
 ### Week 1
 | 日期 | 題目 | 難度 | 語言 | 耗時 | 狀態 | 心得 |
 |------|------|------|------|------|------|------|
-| 09-01 | Maximum Average Pass Ratio | Medium | C# | 1hr | Done | 第一次用到Priority Queue |
+| 09/01 | Maximum Average Pass Ratio | Medium | C# | 1hr | Done | 第一次用到Priority Queue |
+| 09/02| Find The Number of Ways to Place People I | Medium | C# | 0.5hr | Done | 二維點位判斷 |
 
 ### Week 2  
 | 日期 | 題目 | 難度 | 語言 | 耗時 | 狀態 | 心得 |
@@ -25,13 +26,13 @@
 ## 📈 本月統計
 
 ### 完成情況
-- **總練習天數**: 1 天
-- **完成題數**: 1題
-- **語言分布**: C# 1(題), Go 0(題)
-- **難度分布**: Easy 0(題), Medium 1(題), Hard 0(題)
+- **總練習天數**: 2 天
+- **完成題數**: 2題
+- **語言分布**: C# 2(題), Go 0(題)
+- **難度分布**: Easy 0(題), Medium 2(題), Hard 0(題)
 
 ### 時間投入
-- **總時間**: 1小時
+- **總時間**: 1.5小時
 - **平均每題**: 分鐘
 - **每日平均**: 分鐘
 

problems/3025-find-the-number-of-ways-to-place-people-i/go/go.mod

@@ -0,0 +1,3 @@
+module leetcode-3025
+
+go 1.18

problems/3025-find-the-number-of-ways-to-place-people-i/go/main.go

@@ -0,0 +1,70 @@
+// LeetCode 3025: Find The Number Of Ways To Place People I
+// 難度: Medium
+// 日期: 2025-09-02
+
+package main
+
+import "fmt"
+
+// TODO: 實作解法
+func numberOfPairs(points [][]int) int {
+    n := len(points)
+    count := 0;
+
+    for i:= 0; i < n; i++{
+        for j := 0; j < n; j++{
+            if i == j {
+                continue
+            }
+
+            pointA := points[i]
+            pointB := points[j]
+
+            if pointA[0] <= pointB[0] && pointA[1] >= pointB[1] {
+                hasOtherPoint := false;
+                minX := pointA[0]
+                maxX := pointB[0]
+                minY := pointB[1]
+                maxY := pointA[1]
+
+                for k := 0; k < n; k++{
+                    if i == k || j == k{
+                        continue
+                    }
+                        
+                    pointC := points[k]
+
+                    if minX <= pointC[0] && pointC[0] <= maxX && minY <= pointC[1] && pointC[1] <= maxY{
+                        hasOtherPoint = true
+                        break
+                    }
+                }
+
+                if !hasOtherPoint{
+                    count++
+                }
+            }
+        }
+    }
+    return count;
+}
+
+func main() {
+    testCase()
+}
+
+// 測試案例模板
+func testCase() {
+    // Input: 
+    points := [][]int{
+        {6, 2},
+        {4, 4},
+        {2, 6},
+    }
+    // Expected: 
+    fmt.Printf("Test Case: [[6,2],[4,4],[2,6]]\n")
+    fmt.Printf("Expected: 2\n")
+    // Actual: 
+    result := numberOfPairs(points)
+    fmt.Printf("Result: %d\n", result)
+}

problems/3025-find-the-number-of-ways-to-place-people-i/go/main_test.go

@@ -0,0 +1,239 @@
+// LeetCode 3025 Go 單元測試
+package main
+
+import (
+    "math/rand"
+    "testing"
+	"fmt"
+)
+
+func TestCase1_ExampleFromProblem(t *testing.T) {
+    // Arrange
+	points := [][]int{
+		{6, 2},
+		{4, 4},
+		{2, 6},
+	}
+	expected := 2
+
+	// Act
+	result := numberOfPairs(points)
+
+	// Assert
+	if result != expected {
+		t.Errorf("TestCase1 failed. Expected: %v, Got: %v", expected, result)
+	}
+}
+
+func TestCase2_TwoPoints(t *testing.T) {
+	// Arrange
+    points := [][]int{
+		{1, 3},
+		{2, 1},
+	}
+	expected := 1
+
+	// Act
+	result := numberOfPairs(points)
+
+	// Assert
+	if result != expected {
+		t.Errorf("TestCase2 failed. Expected: %v, Got: %v", expected, result)
+	}
+}
+
+func TestCase3_NoValidPairs(t *testing.T) {
+	// Arrange - 沒有有效點對的情況
+	points := [][]int{
+		{1, 1},
+		{2, 2},
+		{3, 3},
+	}
+	expected := 0
+
+	// Act
+	result := numberOfPairs(points)
+
+	// Assert
+	if result != expected {
+		t.Errorf("TestCase3 failed. Expected: %v, Got: %v", expected, result)
+	}
+}
+
+func TestCase4_SameXCoordinate(t *testing.T) {
+	// Arrange - x 座標相同的情況
+	points := [][]int{
+		{3, 5}, // A
+		{3, 2}, // B
+		{3, 1}, // C
+	}
+	// 詳細分析:
+	// (A, B): (3,5) -> (3,2) ✓ 矩形是線段，無其他點
+	// (A, C): (3,5) -> (3,1) ✗ 點B在矩形內
+	// (B, C): (3,2) -> (3,1) ✓ 矩形是線段，無其他點
+	expected := 2
+
+	// Act
+	result := numberOfPairs(points)
+
+	// Assert
+	if result != expected {
+		t.Errorf("TestCase4 failed. Expected: %v, Got: %v", expected, result)
+	}
+}
+
+func TestCase5_SameYCoordinate(t *testing.T) {
+	// Arrange - y 座標相同的情況
+	points := [][]int{
+		{1, 4}, // A
+		{3, 4}, // B
+		{5, 4}, // C
+	}
+	// 詳細分析:
+	// (A, B): (1,4) -> (3,4) ✓ 矩形是線段，無其他點
+	// (A, C): (1,4) -> (5,4) ✗ 點B在矩形內
+	// (B, C): (3,4) -> (5,4) ✓ 矩形是線段，無其他點
+	expected := 2
+
+	// Act
+	result := numberOfPairs(points)
+
+	// Assert
+	if result != expected {
+		t.Errorf("TestCase5 failed. Expected: %v, Got: %v", expected, result)
+	}
+}
+
+func TestCase6_PointsInsideRectangle(t *testing.T) {
+	// Arrange - 矩形內有其他點的情況
+	points := [][]int{
+		{0, 4}, // A
+		{4, 0}, // B
+		{2, 2}, // C
+	}
+	// 詳細分析:
+	// (A, B): (0,4) -> (4,0) ✗ 點C在矩形內
+	// (A, C): (0,4) -> (2,2) ✓ 點B不在矩形內
+	// (C, B): (2,2) -> (4,0) ✓ 點A不在矩形內
+	expected := 2
+
+	// Act
+	result := numberOfPairs(points)
+
+	// Assert
+	if result != expected {
+		t.Errorf("TestCase6 failed. Expected: %v, Got: %v", expected, result)
+	}
+}
+
+func TestCase7_PointsOnBorder(t *testing.T) {
+	// Arrange - 點在矩形邊界上的情況
+	points := [][]int{
+		{0, 3}, // A
+		{3, 0}, // B
+		{0, 0}, // C
+	}
+	// 詳細分析:
+	// (A, B): (0,3) -> (3,0) ✗ 點C在矩形邊界上
+	// (A, C): (0,3) -> (0,0) ✓ 矩形是線段，點B不在其中
+	// (C, B): (0,0) -> (3,0) ✓ 矩形是線段，點A不在其中
+	expected := 2
+
+	// Act
+	result := numberOfPairs(points)
+
+	// Assert
+	if result != expected {
+		t.Errorf("TestCase7 failed. Expected: %v, Got: %v", expected, result)
+	}
+}
+
+func TestEdgeCases_MinimumPoints(t *testing.T) {
+	// Arrange - 最少點數情況 (題目限制 n >= 2)
+	points := [][]int{
+		{0, 1},
+		{1, 0},
+	}
+	expected := 1 // (0,1) 在 (1,0) 的左上方
+
+	// Act
+	result := numberOfPairs(points)
+
+	// Assert
+	if result != expected {
+		t.Errorf("TestEdgeCases_MinimumPoints failed. Expected: %v, Got: %v", expected, result)
+	}
+}
+
+func TestEdgeCases_MaxCoordinateValues(t *testing.T) {
+	// Arrange - 最大座標值情況 (題目限制 0 <= coordinates <= 50)
+	points := [][]int{
+		{0, 50},  // A
+		{50, 0},  // B
+		{25, 25}, // C
+	}
+	expected := 2 // (A,C) 和 (C,B) 有效
+
+	// Act
+	result := numberOfPairs(points)
+
+	// Assert
+	if result != expected {
+		t.Errorf("TestEdgeCases_MaxCoordinateValues failed. Expected: %v, Got: %v", expected, result)
+	}
+}
+
+func TestEdgeCases_EmptyArray(t *testing.T) {
+	// Arrange - 空陣列情況
+	points := [][]int{}
+	expected := 0
+
+	// Act
+	result := numberOfPairs(points)
+
+	// Assert
+	if result != expected {
+		t.Errorf("TestEdgeCases_EmptyArray failed. Expected: %v, Got: %v", expected, result)
+	}
+}
+
+func TestEdgeCases_MaxPoints_RandomPattern(t *testing.T) {
+	// Arrange - 50個不同的點，隨機模式
+	points := make([][]int, 0, 50)
+	usedPoints := make(map[string]bool)
+	
+	// 使用固定種子確保測試可重現
+	rand.Seed(42)
+
+	for len(points) < 50 {
+		x := rand.Intn(51) // 0-50
+		y := rand.Intn(51) // 0-50
+		pointKey := fmt.Sprintf("%d,%d", x, y)
+
+		if !usedPoints[pointKey] {
+			usedPoints[pointKey] = true
+			points = append(points, []int{x, y})
+		}
+	}
+
+	// Act
+	result := numberOfPairs(points)
+
+	// Assert
+	if result < 0 {
+		t.Errorf("TestEdgeCases_MaxPoints_RandomPattern failed. Result should be non-negative, got: %v", result)
+	}
+	if result > 50*49 {
+		t.Errorf("TestEdgeCases_MaxPoints_RandomPattern failed. Result should not exceed 50*49, got: %v", result)
+	}
+
+	// 額外驗證：確保所有點都是不同的
+	distinctPoints := make(map[string]bool)
+	for _, point := range points {
+		key := fmt.Sprintf("%d,%d", point[0], point[1])
+		distinctPoints[key] = true
+	}
+	if len(distinctPoints) != 50 {
+		t.Errorf("TestEdgeCases_MaxPoints_RandomPattern failed. Expected 50 distinct points, got: %v", len(distinctPoints))
+	}
+}

problems/3025-find-the-number-of-ways-to-place-people-i/test/run_tests.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+echo "🧪 執行 LeetCode 題目測試"
+echo "=========================="
+
+# 執行 C# 測試
+echo "📋 C# 測試結果:"
+cd ../csharp
+if dotnet build > /dev/null 2>&1; then
+    cd ../test
+    if dotnet test --logger "console;verbosity=minimal" 2>/dev/null; then
+        echo "✅ C# 測試通過"
+    else
+        echo "❌ C# 測試失敗"
+    fi
+else
+    echo "❌ C# 編譯失敗"
+fi
+
+echo ""
+
+# 執行 Go 測試  
+echo "📋 Go 測試結果:"
+cd ../go
+if go build > /dev/null 2>&1; then
+    # cd ../test
+    if go test -v > /dev/null 2>&1; then
+        echo "✅ Go 測試通過"
+    else
+        echo "❌ Go 測試失敗"
+        echo "詳細輸出:"
+        go test -v
+    fi
+else
+    echo "❌ Go 編譯失敗"
+fi
+
+echo ""
+echo "📊 測試完成！"