509. Fibonacci Number-斐波那契数
The Fibonacci numbers, commonly denoted F(n) form a seq... » 阅读全文
507. Perfect Number-完美数
A perfect number is a positive integer that is equal to... » 阅读全文
506. Relative Ranks-相对名次
Given scores of N athletes, find their relative ranks a... » 阅读全文
504. Base 7-七进制数
Given an integer, return its base 7 string representati... » 阅读全文
Find Mode in Binary Search Tree-二叉搜索树中的众数
Given a binary search tree (BST) with duplicates, find ... » 阅读全文
500. Keyboard Row-键盘行
Given an array of strings words, return the words that ... » 阅读全文
496. Next Greater Element I-下一个更大元素 I
You are given two integer arrays nums1 and nums2 both o... » 阅读全文
492. Construct the Rectangle-构造矩形
A web developer needs to know how to design a web page&... » 阅读全文
485. Max Consecutive Ones-最大连续1的个数
Given a binary array, find the maximum number of consec... » 阅读全文
482. License Key Formatting-密钥格式化
You are given a license key represented as a string S w... » 阅读全文