Java development example - HenryXi.com

4Sum

Problem Description

3Sum Closest

Problem Description

3Sum

Problem Description

Container With Most Water

Problem Description

Median of Two Sorted Arrays

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Two Sum

Problem Description

Longest Substring Without Repeating Characters

Problem Description

Best Time to Buy and Sell Stock

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Trapping Rain Water

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Kth Smallest Element in a BST

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Java 3 threads print in sequence

This is an interview question, the content of the question is like this.

Delete Node in a BST

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Validate Binary Search Tree

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Merge Sorted Array

Problem Description

SQL group by case example

Here's an interview question about SQL. To solve this problem, we need to use group by and the case function. The table structure is as follows.

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