Question 1

Zigzag Conversion — Zopsmart Interview Question

Accepted Answer

"Zigzag Conversion" is a medium difficulty problem asked at Zopsmart interviews. It covers the following topics: String. You can practice it on LeetCode: https://leetcode.com/problems/zigzag-conversion

Question 2

Trapping Rain Water — Zopsmart Interview Question

Accepted Answer

"Trapping Rain Water" is a hard difficulty problem asked at Zopsmart interviews. It covers the following topics: Array, Two Pointers, Dynamic Programming, Stack, Monotonic Stack. You can practice it on LeetCode: https://leetcode.com/problems/trapping-rain-water

Question 3

Reverse Nodes in Even Length Groups — Zopsmart Interview Question

Accepted Answer

"Reverse Nodes in Even Length Groups" is a medium difficulty problem asked at Zopsmart interviews. It covers the following topics: Linked List. You can practice it on LeetCode: https://leetcode.com/problems/reverse-nodes-in-even-length-groups

Question 4

Minimum Window Substring — Zopsmart Interview Question

Accepted Answer

"Minimum Window Substring" is a hard difficulty problem asked at Zopsmart interviews. It covers the following topics: Hash Table, String, Sliding Window. You can practice it on LeetCode: https://leetcode.com/problems/minimum-window-substring

Question 5

Bulls and Cows — Zopsmart Interview Question

Accepted Answer

"Bulls and Cows" is a medium difficulty problem asked at Zopsmart interviews. It covers the following topics: Hash Table, String, Counting. You can practice it on LeetCode: https://leetcode.com/problems/bulls-and-cows

Question 6

Fraction Addition and Subtraction — Zopsmart Interview Question

Accepted Answer

"Fraction Addition and Subtraction" is a medium difficulty problem asked at Zopsmart interviews. It covers the following topics: Math, String, Simulation. You can practice it on LeetCode: https://leetcode.com/problems/fraction-addition-and-subtraction

#	Question Title	Difficulty	Frequency	Topics
1	Zigzag Conversion	MEDIUM	100.0	String
2	Trapping Rain Water	HARD	84.5	ArrayTwo PointersDynamic Programming+2
3	Reverse Nodes in Even Length Groups	MEDIUM	82.6	Linked List
4	Minimum Window Substring	HARD	72.5	Hash TableStringSliding Window
5	Bulls and Cows	MEDIUM	68.9	Hash TableStringCounting
6	Fraction Addition and Subtraction	MEDIUM	68.9	MathStringSimulation
7	Remove K Digits	MEDIUM	64.5	StringStackGreedy+1
8	Container With Most Water	MEDIUM	58.8	ArrayTwo PointersGreedy
9	Group Anagrams	MEDIUM	58.8	ArrayHash TableString+1
10	Reverse Words in a String	MEDIUM	58.8	Two PointersString

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