修修55

摘要： Given two arrays, write a function to compute their intersection. Example: Given nums1 = [1, 2, 2, 1], nums2 = [2, 2], return [2]. 阅读全文

摘要： Given a non-empty array of integers, return the k most frequent elements. For example, Given [1,1,1,2,2,3] and k = 2, return [1,2]. 阅读全文

摘要： Given two strings s and t which consist of only lowercase letters. String t is generated by random shuffling string s and then add one more letter at 阅读全文

摘要： Given an array of integers, every element appears twice except for one. Find that single one. //只有一个元素不一样。那么集合中所有元素异或就可以得到结果。 阅读全文

摘要： You are given a map in form of a two-dimensional integer grid where 1 represents land and 0 represents water. Grid cells are connected horizontally/ve 阅读全文

摘要： Given a List of words, return the words that can be typed using letters of alphabet on only one row's of American keyboard like the image below. Examp 阅读全文

摘要： //二叉搜索树随意两个节点差绝对值的最小值 // .中序遍历得到有序数组，逐个比较差值。 阅读全文

摘要： Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. For example, Given 1-> 阅读全文

摘要： Given a linked list, determine if it has a cycle in it. 阅读全文

摘要： Sort a linked list using insertion sort. //链表的插入排序 阅读全文