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Interview questions by company and topic | SysRound

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4,456 questions

Showing 126–150

CodingDifficulty not specified
Search in Bitonic Array
Given a bitonic array (an array that first increases then decreases), implement an efficient algorithm to search for a target element. Handle variations such as…
Companies: Bloomberg
Last reported Sep 2026
Open workspace
CodingDifficulty not specifiedLeetCode 3284
Sum of Consecutive Subarrays
Given an array of integers and a target value, find or count contiguous (consecutive) subarrays whose sum equals the target. The core challenge is to…
Companies: Meta
Last reported Sep 2026
Open workspace
CodingMediumLeetCode 139
Word Break
Determine whether the string s can be segmented into a sequence of one or more words from wordDict (words may be reused). The core challenge…

Page 6 of 179

Companies: Amazon, Google, Grammarly, Meta +3

Array · Brute-Force Search · Dynamic Programming · Hash Table

Last reported Sep 2026

CodingDifficulty not specifiedLeetCode 2288

Apply Discount to Prices

Tokenize the sentence by spaces and for each word that exactly matches a dollar sign followed by digits, compute price * (100 - discount) /…

Companies: Amazon

Last reported Sep 2026

CodingMediumLeetCode 200

Number of Islands

Count the number of islands (4-directionally connected components of '1's) in an m×n binary grid. This is a connected-components/flood-fill problem typically solved with…

Companies: Amazon, Anduril, Apple, ByteDance +16

Array · Breadth-First Search · Depth-First Search · Matrix

Last reported Sep 2026

CodingDifficulty not specifiedLeetCode 2296

Design a Text Editor

Implement a text editor with a movable cursor that supports inserting text at the cursor, deleting up to k characters to the left (backspace), moving…

Companies: Google, Microsoft

Last reported Sep 2026

CodingDifficulty not specified

Poker Hand Evaluator with Hidden Cards

Implement a card hand comparison system for a simplified poker game where each player holds up to 4 cards, supporting standard hand rankings (high card…

Companies: Rippling

Last reported Sep 2026

CodingEasyLeetCode 387

First Unique Character in a String

Return the index of the first character in s that occurs exactly once (or -1 if none). This is typically solved by counting character frequencies…

Companies: Apple, Goldman Sachs

Counting · Hash Table · Queue · String

Last reported Sep 2026

CodingDifficulty not specified

Implement Candy Crush Game Logic

Implement the core logic of a Candy Crush-style game where groups of 3 or more matching items aligned horizontally, vertically, or diagonally are identified and…

Companies: Roblox

Last reported Sep 2026

CodingDifficulty not specified

Shortest String Compression Using a Doubling Macro Character

Given a string s, compress it using regular characters and a special '*' character. The '*' acts as a macro that repeats the entire sequence…

Companies: Goldman Sachs

Last reported Sep 2026

CodingDifficulty not specifiedLeetCode 500

Keyboard Row

Return the words that can be typed using letters from only one row of a US QWERTY keyboard (case-insensitive), i.e., all characters of a word…

Companies: Apple

Last reported Sep 2026

CodingHardLeetCode 815

Bus Routes

Given repeating bus routes and start/target stops, find the minimum number of bus rides required to go from source to target (or -1 if impossible)…

Companies: Amazon, Bloomberg, Coupang, PayPal +3

Array · Breadth-First Search · Hash Table

Last reported Sep 2026

CodingDifficulty not specifiedLeetCode 1971

Find if Path Exists in Graph

Given an undirected graph (n up to 2×10^5) as an edge list, determine whether there exists any path between the given source and destination vertices…

Companies: Meta, Microsoft, Whatnot

Last reported Sep 2026

CodingMediumLeetCode 430

Flatten a Multilevel Doubly Linked List

Companies: Adobe, Amazon, Bloomberg, Microsoft

Depth-First Search · Doubly-Linked List · Linked List

Last reported Sep 2026

CodingDifficulty not specified

Maximum Rectangles Crossed by a Single Line

Given a set of rectangles on a 2D plane, find the maximum number of rectangles that can be crossed by a single straight vertical or…

Companies: Google

Last reported Sep 2026

CodingDifficulty not specifiedLeetCode 2304

Minimum Path Cost in a Grid

Find the minimum-cost path from any cell in the first row to any cell in the last row of an m×n grid where you may…

Companies: Walmart

Last reported Sep 2026

CodingHardLeetCode 2503

Maximum Number of Points From Grid Queries

For each query threshold, compute how many distinct cells you can reach from the top-left by moving 4-directionally through cells whose value is strictly less…

Companies: Uber

Array · Breadth-First Search · Heap (Priority Queue) · Matrix

Last reported Sep 2026

CodingDifficulty not specifiedLeetCode 2676

Throttle

Given a sequence of request timestamps (or events) and throttling rules (e.g., at most K requests per time window or a required cooldown between same…

Companies: Google, Microsoft, Plaid, Roblox

Last reported Sep 2026

CodingHard

Leftmost-Fit Memory Allocator: Allocate Consecutive Units and Free by Owner

Companies: OpenAI

Data Structure Design · Trees

Last reported Sep 2026

CodingMediumLeetCode 15

3Sum

Find all unique triplets in an integer array that sum to zero, ensuring no duplicate triplets in the output. The core challenge is efficiently enumerating…

Companies: Amazon, Apple, Bloomberg, Google +5

Array · Sorting · Two Pointers

Last reported Sep 2026

CodingMedium

Greedy Longest-Match Tokenization of a String Against a Fixed Vocabulary

Companies: Anthropic

String Algorithms

Last reported Sep 2026

CodingDifficulty not specifiedLeetCode 473

Matchsticks to Square

Determine whether the matchsticks can be partitioned into four groups with equal total length (forming the four sides of a square) using every stick exactly…

Companies: eBay

Last reported Sep 2026

CodingEasyLeetCode 543

Diameter of Binary Tree

Given the root of a binary tree, return the diameter — the maximum number of edges on any path between two nodes; the core challenge…

Companies: Meta, Oracle, Roblox

Binary Tree · Depth-First Search · DP on Trees · Tree

Last reported Sep 2026

CodingMediumLeetCode 45

Jump Game II

Given an array where nums[i] is the maximum forward jump from index i, compute the minimum number of jumps needed to reach the last index…

Companies: Amazon, Flipkart, Salesforce

Array · Dynamic Programming · Greedy

Last reported Sep 2026

CodingDifficulty not specifiedLeetCode 896

Monotonic Array

Determine whether a given integer array is monotonic — either entirely non-decreasing or entirely non-increasing — by verifying the ordering of adjacent elements (expected O(n)…

Companies: Meta, Palo Alto Networks

Last reported Sep 2026