Question 1

Two Sum — Apple Interview Question

Accepted Answer

"Two Sum" is a easy difficulty problem asked at Apple interviews. It covers the following topics: Array, Hash Table. You can practice it on LeetCode: https://leetcode.com/problems/two-sum

Question 2

Longest Substring Without Repeating Characters — Apple Interview Question

Accepted Answer

"Longest Substring Without Repeating Characters" is a medium difficulty problem asked at Apple interviews. It covers the following topics: Hash Table, String, Sliding Window. You can practice it on LeetCode: https://leetcode.com/problems/longest-substring-without-repeating-characters

Question 3

Longest Common Prefix — Apple Interview Question

Accepted Answer

"Longest Common Prefix" is a easy difficulty problem asked at Apple interviews. It covers the following topics: String, Trie. You can practice it on LeetCode: https://leetcode.com/problems/longest-common-prefix

Question 4

Valid Parentheses — Apple Interview Question

Accepted Answer

"Valid Parentheses" is a easy difficulty problem asked at Apple interviews. It covers the following topics: String, Stack. You can practice it on LeetCode: https://leetcode.com/problems/valid-parentheses

Question 5

Median of Two Sorted Arrays — Apple Interview Question

Accepted Answer

"Median of Two Sorted Arrays" is a hard difficulty problem asked at Apple interviews. It covers the following topics: Array, Binary Search, Divide and Conquer. You can practice it on LeetCode: https://leetcode.com/problems/median-of-two-sorted-arrays

Question 6

Merge Intervals — Apple Interview Question

Accepted Answer

"Merge Intervals" is a medium difficulty problem asked at Apple interviews. It covers the following topics: Array, Sorting. You can practice it on LeetCode: https://leetcode.com/problems/merge-intervals

#	Question Title	Difficulty	Frequency	Topics
1	Two Sum	EASY	100.0	ArrayHash Table
2	Longest Substring Without Repeating Characters	MEDIUM	78.3	Hash TableStringSliding Window
3	Longest Common Prefix	EASY	77.6	StringTrie
4	Valid Parentheses	EASY	76.9	StringStack
5	Median of Two Sorted Arrays	HARD	75.8	ArrayBinary SearchDivide and Conquer
6	Merge Intervals	MEDIUM	74.2	ArraySorting
7	Group Anagrams	MEDIUM	74.2	ArrayHash TableString+1
8	Merge Sorted Array	EASY	73.8	ArrayTwo PointersSorting
9	Trapping Rain Water	HARD	73.0	ArrayTwo PointersDynamic Programming+2
10	Reverse Integer	MEDIUM	71.6	Math

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