Practice task library

Find focused work by skill and difficulty, then open it in Practice.Find work by skill, task characteristic, and difficulty, then open it directly in Practice.

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1-50 of 1167 tasksShowing 1-50 of 1167 matching tasks (1167 total)

Accuracy Score

EasyProblem solvingMachine Learning

Actors and Directors

EasyData & queryingSQL

Add Binary

EasyImplementationString

Add Digits

EasyAlgorithmic reasoningImplementationMath+1

Add Strings

EasyImplementationString

Add to Array-Form of Integer

EasyAlgorithmic reasoningImplementationArray+2

Ads Performance

EasyData & queryingAlgorithmic reasoningSorting+1

Array Maximum

EasyImplementationArray

Array Minimum

EasyImplementationArray

Array Pair Sum

EasyAlgorithmic reasoningImplementationArray+2

Array Partition

EasyImplementationArray

Article Views I

EasyData & queryingAlgorithmic reasoningSorting+1

Assign Cookies

EasyAlgorithmic reasoningGreedy+1

Average of Levels in Binary Tree

EasyAlgorithmic reasoningImplementationArray+5

Average Salary By Department

EasyData & queryingAlgorithmic reasoningSorting+1

Backspace String Compare

EasyImplementationString

Backward-Fill Nulls

EasyData & queryingImplementationArray+1

Balanced Binary Tree

EasyAlgorithmic reasoningImplementationBinary Tree+4

Base 7

EasyImplementationString

Baseball Game

EasyProblem solvingSimulation

Best Time to Buy and Sell Stock

EasyImplementationArray+1

Big Countries

EasyData & queryingSQL

Biggest Single Number

EasyData & queryingImplementationMath+1

Binarize

EasyImplementationArray+1

Binary Gap

EasyProblem solvingBit Manipulation

Binary Search

EasyAlgorithmic reasoningImplementationArray+2

Binary Tree Paths

EasyAlgorithmic reasoningBinary Tree+4

Binary Watch

EasyImplementationBit Manipulation+1

Calculate Digit Sum of a String

EasyImplementationMath+1

Calculate Special Bonus

EasyData & queryingSQL

Can Make Arithmetic Progression

EasyAlgorithmic reasoningImplementationArray+1

Can Make Arithmetic Progression From Sequence

EasyAlgorithmic reasoningImplementationArray+1

Can Place Flowers

EasyImplementationArray+1

Capitalize the Title

EasyImplementationString

Capitalize Words

EasyImplementationString

Cells with Odd Values

EasyImplementationMath+1

Chebyshev Distance

EasyImplementationMachine Learning+1

Check if Array Is Sorted and Rotated

EasyAlgorithmic reasoningImplementationArray+3

Check If N and Its Double Exist

EasyImplementationArray

Check if the Sentence Is Pangram

EasyAlgorithmic reasoningImplementationSorting+1

Check If Two String Arrays are Equivalent

EasyImplementationArray+1

Chunk Array

EasyData & queryingImplementationArray+1

Classes More Than 5 Students

EasyData & queryingImplementationMath+1

Climbing Stairs

EasyAlgorithmic reasoningImplementationDynamic Programming+2

Clip Values

EasyImplementationArray+1

Coalesce Columns

EasyData & queryingImplementationArray+1

Combinations (n choose k)

EasyImplementationMath+1

Combine Two Tables

EasyData & queryingSQL

Complement of Base 10 Integer

EasyProblem solvingBit Manipulation

Consecutive Differences

EasyData & queryingImplementationArray+1