【LeetCode-面试算法经典-Java实现】【111-Minimum Depth of Binary Tree（二叉树的最小深度）】
原题 Given a binary tree, find its minimum depth. The minimum depth is the number of nodes along the shortest path from the root node down to the nearest leaf node. 题目大意 给定一棵两叉树求树的最小深度。...
Leetcode 258. Add Digits JAVA语言
1 2 3 Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. For exam...
Leetcode 383. Ransom Note JAVA语言
1 2 3 4 5 6 7 Given an arbitrary ransom note string and another string containing letters from all the magazines, write ...
Leetcode 415. Add Strings JAVA语言
1 2 3 4 5 6 Given two non-negative integers num1 and num2 represented as string, return the sum of num1 and num2. Note: ...
Leetcode 91. Decode Ways JAVA语言
1 2 3 4 5 6 7 8 9 10 11 12 A message containing letters from A-Z is being encoded to numbers using the following mapping: 'A' ...
Leetcode 263. Ugly Number JAVA语言
1 2 3 Write a program to check whether a given number is an ugly number. Ugly numbers are positive numbers whose&nb...
Leetcode 155. Min Stack JAVA语言
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Design a stack that supports push, pop, top, and retrieving the minimum element in co...
LeetCode: Min Stack 最小栈 Java
题目描述： Design a stack that supports push, pop, top, and retrieving the minimum element in constant time. push(x) -- Push element x onto stack. pop() -- Removes the element on top of the stack. top() .....
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