Leetcode

My solutions to Leetcode questions.

Leetcode profile: https://leetcode.com/garfield041/

Solutions

Java

• Two Sum

• Remove Linked List Elements

• Reverse Linked List

Python

• Number of Steps to Reduce a Number to Zero

• Subtract the Product and Sum of Digits of an Integer

• Find Numbers with Even Number of Digits

• To Lower Case

• Unique Number of Occurrences

• Defanging an IP Address

• Two Sum

• Palindrom Number

• Merge Two Sorted Lists

• Jewels and Stones

• Squares of a Sorted Array

• Merge Sorted Array

• Power of Two

• Count Negative Numbers in a Sorted Matrix

• Min Stack

• Reverse String

• Binary Tree Postorder Traversal

• Binary Tree Preorder Traversal

• Binary Tree Inorder Traversal

• Swap Nodes in Pairs

• Fibonacci Number

• Climbing Stairs

• Maximum Depth of Binary Tree

• Search in a Binary Search Tree

• Reverse Linked List

• Find Pivot Index

• Largest Number At Least Twice of Others

• Plus One

• Implement strStr()

• Array Partition I

• Two Sum II - Input Array is Sorted

• Remove Element (In Place)

• Max Consecutive Ones

• Reverse Words in a String

• Reverse Words in a String III

• Remove Duplicates from Sorted Array

• Move Zeroes

• Binary Search

• Guess Number Higher or Lower

• Sqrt(x)

• First Bad Version

• Find Peak Element

• Search for a Range

• Valid Perfect Square

• Intersection of Two Arrays

• Find the Duplicate Number

• Sort an Array

• Validate Binary Search Tree

• Search a 2D Matrix II

• Linked List Cycle

• Linked List Cycle II

• Intersection of Two Linked Lists

• Remove Linked List Elements

• Minimum Depth of Binary Tree

• Odd Even Linked List

• Insert into a Binary Search Tree

• Delete Node in a BST

• Search in a Binary Search Tree

• Add Digits

• Happy Number

• Contains Duplicate

• Reverse String

• Reverse Integer

• Symmetric Tree

• Missing Number

• Palindrome Linked List

• Sum of Two Arrays

• Amend the Sentence

• Remove Nth Node From End of List

• Counting Elements

• Middle of the Linked List

• Last Stone Weight

• Best Time to Buy and Sell Stock II

• How Many Numbers are Smaller than the Current Number

• Create Target Array in the Given Order

• Find Numbers with Even Number Digits

• Squares of a Sorted Array

• Check if N and its Double Exist

• Detect Capital

• Power of Four

• Power of Three

• Find All Duplicates in an Array

• Running Sum of 1D Array

• Kids With Greatest Number of Candies

• Shuffle the Array

• Number of Good Pairs

• Range Sum of BST