Question 1

Valid Parentheses — epam systems Interview Question

Accepted Answer

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

Question 2

Longest Substring Without Repeating Characters — epam systems Interview Question

Accepted Answer

"Longest Substring Without Repeating Characters" is a medium difficulty problem asked at epam systems 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

Two Sum — epam systems Interview Question

Accepted Answer

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

Question 4

Group Anagrams — epam systems Interview Question

Accepted Answer

"Group Anagrams" is a medium difficulty problem asked at epam systems interviews. It covers the following topics: Array, Hash Table, String, Sorting. You can practice it on LeetCode: https://leetcode.com/problems/group-anagrams

Question 5

Minimum Operations to Make a Uni-Value Grid — epam systems Interview Question

Accepted Answer

"Minimum Operations to Make a Uni-Value Grid" is a medium difficulty problem asked at epam systems interviews. It covers the following topics: Array, Math, Sorting, Matrix. You can practice it on LeetCode: https://leetcode.com/problems/minimum-operations-to-make-a-uni-value-grid

Question 6

Longest Palindromic Substring — epam systems Interview Question

Accepted Answer

"Longest Palindromic Substring" is a medium difficulty problem asked at epam systems interviews. It covers the following topics: Two Pointers, String, Dynamic Programming. You can practice it on LeetCode: https://leetcode.com/problems/longest-palindromic-substring

#	Question Title	Difficulty	Frequency	Topics
1	Valid Parentheses	EASY	100.0	StringStack
2	Longest Substring Without Repeating Characters	MEDIUM	100.0	Hash TableStringSliding Window
3	Two Sum	EASY	97.6	ArrayHash Table
4	Group Anagrams	MEDIUM	97.6	ArrayHash TableString+1
5	Minimum Operations to Make a Uni-Value Grid	MEDIUM	97.6	ArrayMathSorting+1
6	Longest Palindromic Substring	MEDIUM	91.8	Two PointersStringDynamic Programming
7	Longest Common Prefix	EASY	84.5	StringTrie
8	Valid Anagram	EASY	84.5	Hash TableStringSorting
9	Valid Palindrome	EASY	79.8	Two PointersString
10	Merge Sorted Array	EASY	79.8	ArrayTwo PointersSorting

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