2 月 2022

Last Updated on 2022-02-17 by Clay

題目

Last Updated on 2022-02-15 by Clay

題目

Given a non-empty array of integers nums, every element appears twice except for one. Find that single one.

You must implement a solution with a linear runtime complexity and use only constant extra space.

Last Updated on 2022-02-13 by Clay

題目

Given an integer array nums of unique elements, return all possible subsets (the power set).

The solution set must not contain duplicate subsets. Return the solution in any order.

Last Updated on 2022-02-11 by Clay

題目

Given two strings s1 and s2, return true if s2 contains a permutation of s1, or false otherwise.

In other words, return true if one of s1's permutations is the substring of s2.

Last Updated on 2022-02-07 by Clay

題目

You are given two strings s and t.

String t is generated by random shuffling string s and then add one more letter at a random position.
Return the letter that was added to t.

Last Updated on 2022-02-01 by Clay

題目