Python 基础知识简单

数组是否不相交

“数组是否不相交”问题的详细指南和 Python 实现。

问题陈述

简单

编写一个函数 are_disjoint(arr1, arr2) ,它接受两个整数列表,如果它们没有共同元素(不相交),则返回 True ,否则返回 False

约束条件
  • 0 <= len(arr1), len(arr2) <= 10^5
  • -10^6 <= arr1[i], arr2[i] <= 10^6

示例

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?
考虑使用特定于数组的数据结构,例如集合或堆。
Edge Cases to Watch
  • 空输入结构
  • 单元素输入
  • 大数值范围

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