Python 基礎知識簡單

數組是否不相交

“數組是否不相交”問題的詳細指南和 Python 實作。

問題陳述

簡單

寫一個函數 are_disjoint(arr1, arr2) ,它接受兩個整數列表,如果它們沒有共同元素(不相交),則傳回 True ,否則傳回 False

約束條件
  • 0 <= len(arr1), len(arr2) <= 10^5
  • -10^6 <= arr1[i], arr2[i] <= 10^6

範例

Example 1
Input
arr1 = [1, 2, 3], arr2 = [4, 5, 6]
Output
True
Explanation

No element appears in both arrays.

Example 2
Input
arr1 = [1, 2, 3], arr2 = [3, 4, 5]
Output
False
Explanation

3 is present in both arrays.

Example 3
Input
arr1 = [], arr2 = [1, 2, 3]
Output
True
Explanation

An empty array is disjoint with any array.

Need a Hint?
考慮使用特定於數組的資料結構,例如集合或堆。
Edge Cases to Watch
  • 空輸入結構
  • 單元素輸入
  • 大數值範圍

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