随笔分类 - 水题
摘要：Given two binary strings, return their sum (also a binary string). The input strings are both non-empty and contains only characters 1 or 0. Example 1
阅读全文
摘要：Given a non-empty array of digits representing a non-negative integer, plus one to the integer. The digits are stored such that the most significant d
阅读全文
摘要：Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right which minimizes the sum of all numbers along its path.
阅读全文
摘要：A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right at any p
阅读全文
摘要：A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right at any p
阅读全文
摘要：Given a linked list, rotate the list to the right by k places, where k is non-negative. Example 1: Example 2: 题意 把链表循环右移k个 题解 1 class Solution { 2 pub
阅读全文
摘要：The set [1,2,3,...,n] contains a total of n! unique permutations. By listing and labeling all of the permutations in order, we get the following seque
阅读全文
摘要：Given a positive integer n, generate a square matrix filled with elements from 1 to n2 in spiral order. Example: 1 class Solution { 2 public: 3 vector
阅读全文
摘要：Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return the length of last word in the string. If the last word
阅读全文
摘要：Given a collection of intervals, merge all overlapping intervals. Example 1: Example 2: 题意 合并重合的闭区间 题解 1 bool operator <(const Interval& a, const Inte
阅读全文
摘要：Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order. Example 1: Example 2: 题意 顺时针螺旋输出数组 题解 1 class
阅读全文
摘要：The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other. Given an integer n, return the
阅读全文
摘要：You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Note: You have to rotate the image in-place, which
阅读全文
摘要：Given an input string (s) and a pattern (p), implement wildcard pattern matching with support for '?' and '*'. The matching should cover the entire in
阅读全文
摘要：Given two non-negative integers num1 and num2 represented as strings, return the product of num1 and num2, also represented as a string. Example 1: Ex
阅读全文
摘要：Given an unsorted integer array, find the smallest missing positive integer. Example 1: Example 2: Example 3: Note: Your algorithm should run in O(n)
阅读全文
摘要：Given a collection of candidate numbers (candidates) and a target number (target), find all unique combinations in candidates where the candidate numb
阅读全文
摘要：Given a set of candidate numbers (candidates) (without duplicates) and a target number (target), find all unique combinations in candidates where the
阅读全文
摘要：The count-and-say sequence is the sequence of integers with the first five terms as following: 1 is read off as "one 1" or 11.11 is read off as "two 1
阅读全文
摘要：Write a program to solve a Sudoku puzzle by filling the empty cells. A sudoku solution must satisfy all of the following rules: Empty cells are indica
阅读全文
浙公网安备 33010602011771号