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Interview questions by company and topic | SysRound

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7 questions

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CodingMediumLeetCode 2232
Minimize Result by Adding Parentheses to Expression
Given an expression "num1+num2", insert a '(' somewhere to the left of '+' and a ')' to the right to minimize the evaluated result —…
Companies: eBay, Meta
Enumeration · String
Last reported Jun 2026
Open workspace
CodingMediumLeetCode 845
Longest Mountain in Array
Find the length of the longest contiguous "mountain" subarray — a strictly increasing sequence immediately followed by a strictly decreasing sequence with length ≥ 3…
Companies: Oracle, TikTok
Array · Dynamic Programming · Enumeration · Two Pointers
Last reported Nov 2025
Open workspace
CodingHardLeetCode 829
Consecutive Numbers Sum

Count how many ways a given n (1 ≤ n ≤ 10^9) can be written as a sum of consecutive positive integers. The core challenge…

Companies: Meta, Microsoft

Enumeration · Math

Last reported Oct 2025

CodingHardLeetCode 3953

Maximum Score with Co-Prime Element

Companies: Atlassian

Array · Combinatorics · Enumeration · Hash Table

CodingMediumLeetCode 2171

Removing Minimum Number of Magic Beans

Given an array of positive integers (bag counts), remove beans (only deletions allowed) so that every non-empty bag has the same count, minimizing total beans…

Companies: D. E. Shaw

Array · Enumeration · Greedy · Prefix Sum

CodingMediumLeetCode 1291

Sequential Digits

Find all integers whose digits are consecutive increasing digits (each digit = previous + 1) and return the sorted list of those within the inclusive…

Companies: Zoho

Enumeration

CodingEasyLeetCode 2778

Sum of Squares of Special Elements

Given a 1-indexed integer array nums of length n, compute the sum of squares of all elements at indices i that divide n (i.e., n…

Companies: Bloomberg

Array · Enumeration