coding
Medium
Verified Question
#1
1. OA[CodeSignal] Find Effective Communication Channels
Category: String coding problemYou are given billing records, communication logs, and payment records for a healthcare system. Your task is to determine which communication channel...Input: String
Output: Computed result
coding
Medium
Verified Question
#2
2. OA [CodeSignal] Final Prices After Discount
Category: Array coding problemYou are given an array
prices where prices[i] is the price of an item. For each item at index i, find the first item at index j > i such that...Input: ArrayOutput: Computed result
coding
Medium
Verified Question
#3
3. OA [CodeSignal] Jump Game
Category: Array coding problemYou are at position
i in an array. From each position, you can jump to: - i + 1 (one step forward) - Any position i + k where k ends in digit...Input: ArrayOutput: Computed result
coding
Medium
Verified Question
#4
4. OA [CodeSignal] Longest Subsequence With Limited Sum
Category: Array coding problemYou are given two arrays:
nums (containing positive integers) and queries (each containing a target sum). For each query, return the maximum...Input: ArrayOutput:** Computed result
coding
Medium
Verified Question
#5
5. OA [CodeSignal] Minimum Operation To Reduce n To 0
Category: Algorithm coding problemGiven a positive integer
n, in one operation you may replace n with either: - n = n + 2^i, or - n = n - 2^i for any integer i >= 0. Find...Input: Integer(s)Output: Integer
coding
Medium
Verified Question
#6
6. OA [CodeSignal] Shortest Good Subarray
Category: Array coding problemGiven an array
arr and an integer k, a subarray is called good if it contains at least k distinct integers. Return the length of the...Input: ArrayOutput: Integer
coding
Medium
Verified Question
#7
7. [CodeSignal] Maximum Zero-Sum Triplets
Category: Array coding problem# Question You are given an array
A of integers. A triplet is a sequence of three consecutive elements. A triplet is called zero-sum if the...Input: ArrayOutput: Computed result
coding
Medium
Verified Question
#8
8. [CodeSignal] Warehouse Robot Commands
Category: Matrix coding problem# Question In a highly automated warehouse, a robot organizes packages stored in a rectangular grid. The grid is represented as a 2D list of integers...Input: Matrix (2D array)
Output: Computed result
coding
Medium
Verified Question
#9
9. [CodeSignal] Drone Hub Travel
Category: Array coding problemAmazon is expanding its next-generation drone delivery network, consisting of
m hubs arranged in a circular ring (Hub 1 is adjacent to Hub m)....Input: ArrayOutput: Computed result
coding
Medium
Verified Question
#10
10. [CodeSignal] Minimum Security Groups
Category: Array coding problemA financial services company has requested AWS for a private deployment of its cloud network. There are
n servers in the network where the security...Input: ArrayOutput: Integer
coding
Medium
Verified Question
#11
11. [CodeSignal] Maximum Secure Deliveries
Category: Array coding problemYou are given an array
deliveryLogs of size n, where each element represents the number of parts delivered in the i-th log. You are also given...Input: ArrayOutput: Integer
coding
Medium
Verified Question
#12
12. Service Log Aggregator
Category: Trie-based coding problemA distributed system emits log entries from multiple services and worker threads. Each log entry is a colon-separated string in the format...Input: Array
Output: Computed result
coding
Medium
Verified Question
#13
13. OA [CodeSignal] Workspace Tracker
Category: Interval-based coding problemBuild a system to track desk workers at a shared office space. The system records when each worker enters and leaves and computes how long they have...Input: String
Output: Array
coding
Medium
Verified Question
#14
14. [CodeSignal] Minimum Score Suppressor
Category: Algorithm coding problemYou are given a list of ad
budgets (integers) and an integer k representing the number of throttle operations available. Each operation selects...Input: ListOutput: Integer
coding
Medium
Verified Question
#15
15. [CodeSignal] Optimal Voucher Allocation
Category: Algorithm coding problemYou are given
couponsCount discount coupons and a list of monthly service fees. Each coupon halves one service fee using integer floor division....Input: ListOutput: Integer
coding
Medium
Verified Question
#16
16. OA [CodeSignal] Prime Jumps
Category: Algorithm coding problem# OA [CodeSignal] Prime Jumps A game is played with the following rules: - A player starts at cell 0 with a score of 0. - There is a row of
n cells...Input: Number(s)Output: Computed result
coding
Medium
Verified Question
#17
17. [CodeSignal] Common Free Slot
Category: Interval-based coding problem# [CodeSignal] Common Free SlotInput: List
Output: Computed result
coding
Medium
Verified Question
#18
18. [CodeSignal] Contact Role Capacity Validator
Category: String coding problemA platform tracks permission assignments between departments, employees, and their access levels. Each assignment is represented by three strings:...Input: List
Output: Array
coding
Medium
Verified Question
#19
19. [CodeSignal] Country Meeting Date Finder
Category: Algorithm coding problemA global organization is scheduling regional check-ins for its distributed teams. Each team member belongs to a region and provides a list of...Input: List
Output: Array
coding
Medium
Verified Question
#20
20. [CodeSignal] Customer Peak Call Tracker
Category: String coding problemA billing platform tracks user sessions for resource usage metering. Each session record contains: - userId: an integer identifying the user. -...Input: List
Output: Computed result
coding
Medium
Verified Question
#21
21. [CodeSignal] Portfolio Path Counter
Category: Algorithm coding problemA warehouse manager starts with initial units of inventory. In one operation, the manager can either restock one unit (increase inventory by 1) or...Input: Number(s)
Output: Integer
coding
Medium
Verified Question
#22
22. [CodeSignal] Leftmost Zero Filler
Category: Array coding problemYou are given a binary array slots containing only 0s and 1s, and an array of string commands ops. Apply each command in order: - Command "1": Find...Input: Array of strings
Output: Computed result
coding
Medium
Verified Question
#23
23. [CodeSignal] Matrix Command Engine
Category: Matrix coding problemYou are given a 2D integer array grid of size n x m and an array of strings commands. Apply each command in order: - "reverseRow r": Reverse the...Input: Matrix (2D array)
Output: Computed result
coding
Medium
Verified Question
#24
24. [CodeSignal] Sequential House Builder
Category: Grid/matrix coding problemYou are monitoring cell activations on an infinite integer grid line. Initially, no cells are active. You are given an array queries of distinct...Input: 2D grid
Output: Integer
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