iT 邦幫忙::一起幫忙解決難題，拯救 IT 人的一天

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技術 LeetCode 145. Binary Tree Postorder Traversal (With Java)

附上題目連結題目：給定一棵樹，求出透過postorder traversal的值 postorder探討：首先我們要先拜訪左邊的節點，之後拜訪右邊的節點，最後...

CashYang ‧ 2022-07-02

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技術 leetcode with MySQL:182. Duplicate Emails

題目: Table: Person +-------------+---------+| Column Name | Type |+--------...

ko_min ‧ 2022-07-02

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技術 leetcode with MySQL:181. Employees Earning More Than Their Managers

題目: Table: Employee +-------------+---------+| Column Name | Type |+------...

ko_min ‧ 2022-07-01

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技術 leetcode with MySQL:175. Combine Two Tables

刷leetcode遇到SQL的題目,那也只能換個語言了題目: Table: Person +-------------+---------+| Colu...

ko_min ‧ 2022-07-01

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技術 leetcode with python:171. Excel Sheet Column Number

題目: Given a string columnTitle that represents the column title as appears in a...

ko_min ‧ 2022-07-01

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技術 leetcode with python:169. Majority Element

題目: Given an array nums of size n, return the majority element. The majority...

ko_min ‧ 2022-06-30

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技術 leetcode with python:168. Excel Sheet Column Title

題目: Given an integer columnNumber, return its corresponding column title as it...

ko_min ‧ 2022-06-30

0 Like 0 留言 931 瀏覽

技術 LeetCode 144. Binary Tree Preorder Traversal (With Java)

先附上題目連結題目說明：給定一棵樹，要你用前序追蹤來儲存每個節點的值前一篇文章有提到樹的遍歷方式有四種，這次要介紹的是前序(Preorder)的遍歷。前序...

CashYang ‧ 2022-07-02

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技術 LeetCode 94. Binary Tree Inorder Traversal (With Java)

先附上題目連結問題說明:給定的一棵樹，透過一個List(Int型態)來儲存此樹中序的遍歷樹的遍歷(Traversal)可以分成:1. 前序(Preorder...

CashYang ‧ 2022-06-30

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技術 leetcode with python:160. Intersection of Two Linked Lists

題目: Given the heads of two singly linked-lists headA and headB, return the node...

ko_min ‧ 2022-06-30

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技術 leetcode with python:155. Min Stack

題目: Design a stack that supports push, pop, top, and retrieving the minimum ele...

ko_min ‧ 2022-06-29

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技術 leetcode with python:145. Binary Tree Postorder Traversal

題目: Given the root of a binary tree, return the postorder traversal of its node...

ko_min ‧ 2022-06-29

1 Like 0 留言 751 瀏覽

技術 leetcode with python:144. Binary Tree Preorder Traversal

題目: Given the root of a binary tree, return the preorder traversal of its nodes...

ko_min ‧ 2022-06-29

1 Like 0 留言 895 瀏覽

技術 leetcode with python:141. Linked List Cycle

題目: Given head, the head of a linked list, determine if the linked list has a c...

ko_min ‧ 2022-06-28

0 Like 0 留言 652 瀏覽

技術 leetcode with python:136. Single Number

題目: Given a non-empty array of integers nums, every element appears twice excep...

ko_min ‧ 2022-06-28

0 Like 0 留言 1080 瀏覽

技術 leetcode with python:125. Valid Palindrome

題目: A phrase is a palindrome if, after converting all uppercase letters into lo...

ko_min ‧ 2022-06-28

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技術 leetcode with python:121. Best Time to Buy and Sell Stock

題目: You are given an array prices where prices[i] is the price of a given stock...

ko_min ‧ 2022-06-27

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技術 leetcode with python:119. Pascal's Triangle II

題目: Given an integer rowIndex, return the rowIndexth (0-indexed) row of the Pas...

ko_min ‧ 2022-06-27

0 Like 1 留言 1120 瀏覽

技術 leetcode with python:118. Pascal's Triangle

題目: Given an integer numRows, return the first numRows of Pascal's triangle....

ko_min ‧ 2022-06-27

0 Like 0 留言 1662 瀏覽

技術 leetcode with python:112. Path Sum

題目: Given the root of a binary tree and an integer targetSum, return true if th...

ko_min ‧ 2022-06-26

0 Like 0 留言 708 瀏覽

技術 leetcode with python:111. Minimum Depth of Binary Tree

題目: Given a binary tree, find its minimum depth. The minimum depth is the num...

ko_min ‧ 2022-06-26

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技術 leetcode with python:110. Balanced Binary Tree

題目: Given a binary tree, determine if it is height-balanced. 給定一個binary tree,判...

ko_min ‧ 2022-06-26

0 Like 0 留言 1258 瀏覽

技術 leetcode with python:108. Convert Sorted Array to Binary Search Tree

題目: Given an integer array nums where the elements are sorted in ascending orde...

ko_min ‧ 2022-06-25

0 Like 0 留言 1004 瀏覽

技術 leetcode with python:104. Maximum Depth of Binary Tree

題目: Given the root of a binary tree, return its maximum depth. A binary tree'...

ko_min ‧ 2022-06-25

1 Like 1 留言 839 瀏覽

技術 leetcode with python:101. Symmetric Tree

題目: Given the root of a binary tree, check whether it is a mirror of itself (i....

ko_min ‧ 2022-06-25

0 Like 1 留言 1207 瀏覽

技術 leetcode with python:100. Same Tree

題目: Given the roots of two binary trees p and q, write a function to check if t...

ko_min ‧ 2022-06-24

0 Like 2 留言 1130 瀏覽

技術 leetcode with python:94. Binary Tree Inorder Traversal

題目: Given the root of a binary tree, return the inorder traversal of its nodes'...

ko_min ‧ 2022-06-24

0 Like 0 留言 900 瀏覽

技術 leetcode with python:88. Merge Sorted Array

題目: You are given two integer arrays nums1 and nums2, sorted in non-decreasing...

ko_min ‧ 2022-06-24

0 Like 0 留言 908 瀏覽

技術 leetcode with python:83. Remove Duplicates from Sorted List

題目: Given the head of a sorted linked list, delete all duplicates such that eac...

ko_min ‧ 2022-06-23

0 Like 0 留言 679 瀏覽

技術 leetcode with python:70. Climbing Stairs

題目: You are climbing a staircase. It takes n steps to reach the top. Each tim...

ko_min ‧ 2022-06-23

技術 LeetCode 145. Binary Tree Postorder Traversal (With Java)

技術 leetcode with MySQL:182. Duplicate Emails

技術 leetcode with MySQL:181. Employees Earning More Than Their Managers

技術 leetcode with MySQL:175. Combine Two Tables

技術 leetcode with python:171. Excel Sheet Column Number

技術 leetcode with python:169. Majority Element

技術 leetcode with python:168. Excel Sheet Column Title

技術 LeetCode 144. Binary Tree Preorder Traversal (With Java)

技術 LeetCode 94. Binary Tree Inorder Traversal (With Java)

技術 leetcode with python:160. Intersection of Two Linked Lists

技術 leetcode with python:155. Min Stack

技術 leetcode with python:145. Binary Tree Postorder Traversal

技術 leetcode with python:144. Binary Tree Preorder Traversal

技術 leetcode with python:141. Linked List Cycle

技術 leetcode with python:136. Single Number

技術 leetcode with python:125. Valid Palindrome

技術 leetcode with python:121. Best Time to Buy and Sell Stock

技術 leetcode with python:119. Pascal's Triangle II

技術 leetcode with python:118. Pascal's Triangle

技術 leetcode with python:112. Path Sum

技術 leetcode with python:111. Minimum Depth of Binary Tree

技術 leetcode with python:110. Balanced Binary Tree

技術 leetcode with python:108. Convert Sorted Array to Binary Search Tree

技術 leetcode with python:104. Maximum Depth of Binary Tree

技術 leetcode with python:101. Symmetric Tree

技術 leetcode with python:100. Same Tree

技術 leetcode with python:94. Binary Tree Inorder Traversal

技術 leetcode with python:88. Merge Sorted Array

技術 leetcode with python:83. Remove Duplicates from Sorted List

技術 leetcode with python:70. Climbing Stairs

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