Improve your critical thinking with coding problems.

Easy 0/905

Medium 0/720

24.562 Active Users

497.926 Submissions

Sum of Odd number Easy

• TA-2

hoangducbinh

• 907/954
• 35
• 100

romaji Medium

• algorithm
• string

TuanLQ7

• 196/201
• 12
• 150

housesList Medium

• Algorithm

vietcv

• 9/9
• 17
• 120

GroupedBits Easy

• Algorithm
• Bitwise

TungNM1

• 779/780
• 38
• 100

primeXor Medium

• Algorithm

TungNM1

• 164/182
• 8
• 150

maxXOR Easy

• Algorithm

TungNM1

• 297/317
• 11
• 100

electronicScreen Easy

• Math
• Numbers
• HaiZuka

HaiZuka

• 416/420
• 26
• 120

onesAndZeros Medium

• Greedy
• Implementation

vannc

• 827/967
• 46
• 150

countBitsPrime Easy

• bit manipulation

CoderToDev

• 310/362
• 25
• 100

decodeMorseCode Easy

• string
• Database

markhermy3100

• 315/319
• 24
• 100

Binary Converter 1 Easy

• binary
• convert

HCM23_FRF_EMB_05_MinhVT

• 245/301
• 33
• 100

keyboardRow Easy

• Array
• Set

liem_do

• 717/728
• 50
• 100

Sum Of Exponential Polynomial Version II Medium

• math

CWJ_HonaNguyen

• 10/194
• 13
• 200

arrayChange Easy

• Algorithm
• Sequence

vietcv

• 791/793
• 31
• 100

decryptText Easy

• algorithm
• string
• train

TuanLQ7

• 575/575
• 44
• 100

isMAC48Address Easy

• Algorithm
• String
• Regex
• train

vietcv

• 793/851
• 64
• 100

missingNumber Easy

• Numerical
• train

kien_the_sun

• 1129/1435
• 99
• 100

isSortedArray Easy

• Array

kien_the_sun

• 6084/6143
• 85
• 100

duplicate Easy

• Set

kien_the_sun

• 859/868
• 31
• 100

setOddBits Easy

• Bitwise
• Math

liem_do

• 353/383
• 26
• 100

Kinv Easy

• data structure

hoangducbinh

• 1458/3008
• 129
• 100

• 1
• 2
• 3
• 4
• ...