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文章目录1. Two sum 1. Two sum Approach 1: Brute Force The brute force approach is simple. Loop through each element xx and find if there is another value that equals to target - x. class solution{ public...

Questions Given an array nums and a value val, remove all instances of that value in-place and return the new length. Do not allocate extra space for another array, you must do this by modifying the i...

Question Given a sorted array nums, remove the duplicates in-place such that each element appear only once and return the new length. Do not allocate extra space for another array, you must do this by...