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Apple SDE 1

The 50 highest-frequency questions from all time. Finish the strongest signals first.

One question at a time.

Top questions 50

Done	Question	LeetCode
Mark LRU Cache completed	LRU Cache	Solve
Mark Two Sum completed	Two Sum	Solve
Mark Merge Intervals completed	Merge Intervals	Solve
Mark Number of Islands completed	Number of Islands	Solve
Mark Best Time to Buy and Sell Stock completed	Best Time to Buy and Sell Stock	Solve
Mark Design Hit Counter completed	Design Hit Counter	Solve
Mark Rotate Array completed	Rotate Array	Solve
Mark Group Anagrams completed	Group Anagrams	Solve
Mark Top K Frequent Elements completed	Top K Frequent Elements	Solve
Mark Longest Common Prefix completed	Longest Common Prefix	Solve
Mark Reverse Linked List completed	Reverse Linked List	Solve
Mark Valid Sudoku completed	Valid Sudoku	Solve
Mark Course Schedule II completed	Course Schedule II	Solve
Mark Course Schedule completed	Course Schedule	Solve
Mark Valid Parentheses completed	Valid Parentheses	Solve
Mark Valid Palindrome completed	Valid Palindrome	Solve
Mark Product of Array Except Self completed	Product of Array Except Self	Solve
Mark Kth Largest Element in an Array completed	Kth Largest Element in an Array	Solve
Mark Maximum Subarray completed	Maximum Subarray	Solve
Mark Reverse Words in a String completed	Reverse Words in a String	Solve
Mark Spiral Matrix completed	Spiral Matrix	Solve
Mark Time Based Key-Value Store completed	Time Based Key-Value Store	Solve
Mark Longest Substring Without Repeating Characters completed	Longest Substring Without Repeating Characters	Solve
Mark Merge k Sorted Lists completed	Merge k Sorted Lists	Solve
Mark Best Time to Buy and Sell Stock II completed	Best Time to Buy and Sell Stock II	Solve
Mark Reverse Integer completed	Reverse Integer	Solve
Mark Rotate Image completed	Rotate Image	Solve
Mark Subarray Product Less Than K completed	Subarray Product Less Than K	Solve
Mark Find First and Last Position of Element in Sorted Array completed	Find First and Last Position of Element in Sorted Array	Solve
Mark Median of Two Sorted Arrays completed	Median of Two Sorted Arrays	Solve
Mark Meeting Rooms II completed	Meeting Rooms II	Solve
Mark Subarray Sum Equals K completed	Subarray Sum Equals K	Solve
Mark Trapping Rain Water completed	Trapping Rain Water	Solve
Mark Design Circular Queue completed	Design Circular Queue	Solve
Mark Insert Delete GetRandom O(1) completed	Insert Delete GetRandom O(1)	Solve
Mark Lowest Common Ancestor of a Binary Tree completed	Lowest Common Ancestor of a Binary Tree	Solve
Mark Move Zeroes completed	Move Zeroes	Solve
Mark Reverse Bits completed	Reverse Bits	Solve
Mark Merge Two Sorted Lists completed	Merge Two Sorted Lists	Solve
Mark Snapshot Array completed	Snapshot Array	Solve
Mark Basic Calculator II completed	Basic Calculator II	Solve
Mark Find Median from Data Stream completed	Find Median from Data Stream	Solve
Mark Min Stack completed	Min Stack	Solve
Mark Word Ladder completed	Word Ladder	Solve
Mark Merge Sorted Array completed	Merge Sorted Array	Solve
Mark Word Break completed	Word Break	Solve
Mark 3Sum completed	3Sum	Solve
Mark Climbing Stairs completed	Climbing Stairs	Solve
Mark Design Tic-Tac-Toe completed	Design Tic-Tac-Toe	Solve
Mark Search a 2D Matrix II completed	Search a 2D Matrix II	Solve

Showing the 50 highest-frequency questions from 298 reported in this period.