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摘要： 121. Best Time to Buy and Sell Stock【easy】 Say you have an array for which the ith element is the price of a given stock on day i. If you were only pe 阅读全文

摘要： 167. Two Sum II - Input array is sorted【easy】 Given an array of integers that is already sorted in ascending order, find two numbers such that they ad 阅读全文

摘要： 283. Move Zeroes【easy】 Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero ele 阅读全文

摘要： 561. Array Partition I【easy】 Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), ..., 阅读全文

摘要： 219. Contains Duplicate II【easy】 Given an array of integers and an integer k, find out whether there are two distinct indices i and j in the array suc 阅读全文

摘要： 217. Contains Duplicate【easy】 Given an array of integers, find if the array contains any duplicates. Your function should return true if any value app 阅读全文