摘要： 1、CellType如下类型： 2、在读取Cell内容时，遇到当CellType == CELL_BLANK_TYPE时 a、按照cell.getNumericCellValue()读取，会读取到0.0。 b、按照cell.getStringCellValue()读取，会读取到empty的Strin 阅读全文

摘要： Given an integer array of size n, find all elements that appear more than ⌊ n/3 ⌋ times. The algorithm should run in linear time and in O(1) space. Gi 阅读全文

摘要： Given a sorted integer array without duplicates, return the summary of its ranges. For example, given [0,1,2,4,5,7], return ["0->2","4->5","7"]. 很简单的一 阅读全文

摘要： Implement a basic calculator to evaluate a simple expression string. The expression string contains only non-negative integers, +, -, *, / operators a 阅读全文

摘要： Implement the following operations of a stack using queues. push(x) -- Push element x onto stack. pop() -- Removes the element on top of the stack. to 阅读全文

摘要： Implement a basic calculator to evaluate a simple expression string. The expression string may contain open ( and closing parentheses ), the plus + or 阅读全文

摘要： Find the total area covered by two rectilinear rectangles in a 2D plane. Each rectangle is defined by its bottom left corner and top right corner as s 阅读全文

摘要： Given a complete binary tree, count the number of nodes. Definition of a complete binary tree from Wikipedia:In a complete binary tree every level, ex 阅读全文

摘要： 按照frequency来排序，总共27题 1、2. Add Two Numbers https://leetcode.com/problems/add-two-numbers/#/description 两个链表相加，注意就是进位问题。 2、237. Delete Node in a Linked 阅读全文

摘要： Given a 2D binary matrix filled with 0's and 1's, find the largest square containing only 1's and return its area. For example, given the following ma 阅读全文