James Pan

原题网址：https://leetcode.com/problems/two-sum-ii-input-array-is-sorted/ Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific tar

原题网址：https://leetcode.com/problems/3sum/ Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives the sum of ze

原题网址：https://leetcode.com/problems/3sum-closest/ Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integ

原题网址：http://www.lintcode.com/en/problem/find-peak-element-ii/ There is an integer matrix which has the following features: The numbers in adjacent positions are different.The matrix has n rows