leetcode-75

LeetCode 75 Ace Coding Interview with 75 Qs

Array / String

• Merge Strings Alternately (Easy)
• Greatest Common Divisor of Strings (Easy)
• Kids With the Greatest Number of Candies (Easy)
• Can Place Flowers (Easy)
• Reverse Vowels of a String (Easy)
• Reverse Words in a String (Medium)
• Product of Array Except Self (Medium)
• Increasing Triplet Subsequence (Medium)
• String Compression (Medium)

Two Pointers

• Move Zeroes (Easy)
• Is Subsequence (Easy)
• Container With Most Water (Medium)
• Max Number of K-Sum Pairs (Medium)

Sliding Window

• Maximum Average Subarray I (Easy)
• Maximum Number of Vowels in a Substring of Given Length (Medium)
• Max Consecutive Ones III (Medium)
• Longest Subarray of 1's After Deleting One Element (Medium)

Prefix Sum

• Find the Highest Altitude (Easy)
• Find Pivot Index (Easy)

Hash Map / Set

• Find the Difference of Two Arrays (Easy)
• Unique Number of Occurrences (Easy)
• Determine if Two Strings Are Close (Medium)
• Equal Row and Column Pairs (Medium)

Stack

• Removing Stars From a String (Medium)
• Asteroid Collision (Medium)
• Decode String (Medium)

Queue

• Number of Recent Calls (Easy)
• Dota2 Senate (Medium)

Linked List

• Delete the Middle Node of a Linked List (Medium)
• Odd Even Linked List (Medium)
• Reverse Linked List (Easy)
• Maximum Twin Sum of a Linked List (Medium)

Binary Tree - DFS

• Maximum Depth of Binary Tree (Easy)
• Leaf-Similar Trees (Easy)
• Count Good Nodes in Binary Tree (Medium)
• Path Sum III (Medium)
• Longest ZigZag Path in a Binary Tree (Medium)
• Lowest Common Ancestor of a Binary Tree (Medium)

Binary Tree - BFS

• Binary Tree Right Side View (Medium)
• Maximum Level Sum of a Binary Tree (Medium)

Binary Search Tree

• Search in a Binary Search Tree (Easy)
• Delete Node in a BST (Medium)

Graphs - DFS

• Keys and Rooms (Medium)
• Number of Provinces (Medium)
• Reorder Routes to Make All Paths Lead to the City Zero (Medium)
• Evaluate Division (Medium)

Graphs - BFS

• Nearest Exit from Entrance in Maze (Medium)
• Rotting Oranges (Medium)

Heap / Priority Queue

• Kth Largest Element in an Array (Medium)
• Smallest Number in Infinite Set (Medium)
• Maximum Subsequence Score (Medium)
• Total Cost to Hire K Workers (Medium)

Binary Search

• Guess Number Higher or Lower (Easy)
• Successful Pairs of Spells and Potions (Medium)
• Find Peak Element (Medium)
• Koko Eating Bananas (Medium)

Backtracking

• Letter Combinations of a Phone Number (Medium)
• Combination Sum III (Medium)

DP - 1D

• N-th Tribonacci Number (Easy)
• Min Cost Climbing Stairs (Easy)
• House Robber (Medium)
• Domino and Tromino Tiling (Medium)

DP - Multidimensional

• Unique Paths (Medium)
• Longest Common Subsequence (Medium)
• Best Time to Buy and Sell Stock with Transaction Fee (Medium)
• Edit Distance (Medium)

Bit Manipulation

• Counting Bits (Easy)
• Single Number (Easy)
• Minimum Flips to Make a OR b Equal to c (Medium)

Trie

• Implement Trie (Prefix Tree) (Medium)
• Search Suggestions System (Medium)

Intervals

• Non-overlapping Intervals (Medium)
• Minimum Number of Arrows to Burst Balloons (Medium)

Monotonic Stack

• Daily Temperatures (Medium)
• Online Stock Span (Medium)

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