[#0165]feat(leetcode): Init project, add C# solution, unit test and README
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problems/0165-compare-version-numbers/test/edge_cases.md
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problems/0165-compare-version-numbers/test/edge_cases.md
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# 邊界情況清單(165 Compare Version Numbers)
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## 需要測試的邊界
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- [x] 空輸入 / 單一元素:`""`、`"0"`
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- [x] 重複元素 / 全相同:`"1.0.0"` vs `"1"`
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- [x] 極值(最小/最大):`"2147483647"` vs `"2147483646"`
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- [x] 含負數 / 0 / 大數:題目無負數,已覆蓋多零與大修訂號
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- [x] 大資料量(接近上限):200 段版本字串
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## 額外案例
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### 案例 1
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- 輸入:`version1 = "", version2 = "0"`
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- 預期:`0`
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- 說明:空字串缺少所有段,視為全 0
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### 案例 2
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- 輸入:`version1 = "2147483647", version2 = "2147483646"`
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- 預期:`1`
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- 說明:驗證最大 32-bit 整數段處理
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### 案例 3
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- 輸入:`version1 = "0.0.0", version2 = "0"`
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- 預期:`0`
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- 說明:多段全 0 與單段 0 視為相同
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### 案例 4
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- 輸入:`version1 = string.Join(".", Enumerable.Repeat("0", 199)) + ".1"`, `version2 = string.Join(".", Enumerable.Repeat("0", 200))`
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- 預期:`1`
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- 說明:長度 200 的版本字串,在最後一段差異才分勝負
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