Note: This is a companion problem to the  System Design problem:  Design TinyURL. TinyUR…

  Given a non-empty array of non-negative integers nums, the degree of this array is defin…

Count the number of prime numbers less than a non-negative number, n. Example: Input: 10 Output: 4 Explanation…

Simplify Path Given an absolute path for a file (Unix-style), simplify it. For example, path = "/home/", =>…

  Given several boxes with different colors represented by different positive numbers. You may exper…

  Given an unsorted array of integers, find the length of longest continuous increasing subsequ…

题目： Given a set of non-overlapping intervals, insert a new interval into the intervals (merge if nec…

Longest Descending Path 给出一个矩阵，求矩阵中从某个点开始，最长的下降路径。路径可以走上下左右四个方向。求最长路径的长度。 1 2 3 4 5 6 7 8 其中一条最长路径是8 7 6 5 1 记…

题目 75. 寻找峰值 你给出一个整数数组(size为n)，其具有以下特点： 相邻位置的数字是不同的 A[0] < A[1] 并且 A[n - 2] > A[n - 1] 假定P是峰值的位置则满足A[P] &…

欢迎fork and star：Nowcoder-Repository-github 110. Balanced Binary Tree 题目 Given a binary tree, determine if it i…

题目： Given a linked list, return the node where the cycle begins. If there is no cycle, return null. Follo…

Maximum Subarray 最新更新请见：https://yanjia.me/zh/2019/02/… Find the contiguous subarray within an array (con…