coding
Easy
Verified
Top Recurring Substring
Category: Graph coding problemA search analytics service needs to find which fixed-length pattern occurs most often in a block of text. Given a lowercase string
s and a positive...Input: Graph (nodes and edges)Output: Computed result
coding
Easy
Verified
Active Sprint Filter
Category: Graph coding problemA project tracking system logs team activity throughout the workday. Each log entry has the format
"teamId action timestamp", where action is...Input: Graph (nodes and edges)Output: Printed output
coding
Medium
Verified
Evens Before Odds
Category: Array coding problemYou are given an integer array
nums. Rearrange nums so that all even numbers appear before all odd numbers. The relative order of even or odd...Input: ArrayOutput: Integer
coding
Easy
Verified
Top Frequency Substring
Category: Graph coding problemGiven a string
text containing only lowercase English letters and a positive integer k, find the substring of length k that appears most...Input: Graph (nodes and edges)Output: Computed result
coding
Easy
Verified
Card Straight Check
Category: String coding problemYou are dealt five playing cards. Determine whether they can form a straight, which is a sequence of five consecutive values regardless of suit. Card...Input: String
Output: Computed result
coding
Medium
Verified
Cyclic Digit Primality
Category: Algorithm coding problemA number is called a cyclic prime if every rotation of its decimal digits produces a prime number. A rotation moves the leftmost digit to the...Input: Integer(s)
Output: Computed result
coding
Medium
Verified
Tower Game Optimizer
Category: Array coding problemA tower has
n floors numbered from 0 to n - 1. Each floor has an energy cost to traverse and a reward value. You start a ball at one chosen...Input: ArrayOutput: Computed result
coding
Medium
Verified
Social Network Friend Suggester
Category: Array coding problemBuild a friend recommendation system for a social network. Given
n users (indexed 0 to n - 1) and a list of existing friendships (undirected...Input: ArrayOutput: Array
coding
Medium
Verified
Item Price Tracker
Category: Algorithm coding problemDesign a class that tracks the price history of a single product. Price records are keyed by timestamp and can be updated at any time. The tracker...Input: Given input
Output: Computed result
coding
Easy
Verified
[CodeSignal] Filtered Palindrome Check
Category: Array coding problemGiven two character arrays
skipChars and inputChars, determine whether inputChars forms a palindrome after removing all characters that appear...Input: ArrayOutput: Printed output
coding
Easy
Verified
Eliminate Adjacent Repeats
Category: String coding problemYou are given a string
s of lowercase English letters. In one operation, you may change any single character to any other lowercase letter. Find...Input: StringOutput: Integer
coding
Easy
Verified
[CodeSignal] Adjacent Character Removal
Category: Algorithm coding problemYou have a word of length
L made up only of lowercase English letters. A character at position i is called a conflict if it equals the...Input: Number(s)Output: Integer
coding
Medium
Verified
Top Values After Operations
Category: Array coding problemYou are given an array of non-negative integers
nums and two integers k and m. Perform exactly k operations on nums. In each operation: 1....Input: ArrayOutput: Computed result
coding
Easy
Verified
Kth Largest Net Borrower
Category: String coding problemYou are analyzing a peer-to-peer lending platform. Each loan is recorded as a triplet
[borrower, lender, amount] where borrower and lender are...Input: ListOutput: Computed result
coding
Hard
Verified
Expression Simplifier
Category: String coding problemGiven an algebraic expression string containing single lowercase-letter variables, the operators
+ and -, and parentheses ( and ), simplify...Input: StringOutput: Computed result
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