Prove your coding skills, earn points and get your place on our Leaderboard
Build your own Code Challenge and be rewarded!Build a Code Challenge
Avg. Reward: 50 (50%) in 25 submissions
You are given two linked lists. Return a single list that alternately has elements from both lists
Avg. Reward: 80 (80%) in 80 submissions
Tell if a given year in the Gregorian calendar is a leap year or not
Avg. Reward: 74 (74%) in 892 submissions
FizzBuzz is presented as the lowest level of comprehension required to illustrate adequacy.
Avg. Reward: 69 (69%) in 97 submissions
Write a function or method to check a sentence to see if it is a pangram or not and show its use.
Avg. Reward: 67 (67%) in 6 submissions
The string: 496620796f752061726520612070726f6772616d6d696e6720477572752c207468697320776f756c642062652061207069656365206f662063616b652e2e2e Should produce: SWYgeW91IGFyZSBhIHByb2dyYW1taW5nIEd1cnUsIHRoaXMgd291bGQgYmUgYSBwaWVjZSBvZiBjYWtlLi4u
Avg. Reward: 164 (55%) in 36 submissions
In this challenge you will have to detect if the brackets in your code are correctly matched.
Avg. Reward: 77 (77%) in 165 submissions
In this challenge you need to analyse a string and return the number of words present in that string.
Avg. Reward: 313 (52%) in 17 submissions
In this problem you will need to calculate the number of ways in which is possible to fiil the squad formation.
Avg. Reward: 167 (84%) in 82 submissions
In this challenge you will have to perform some text operations like replacing strings, capitalize words and reordering text.
Avg. Reward: 142 (95%) in 88 submissions
A new investor from Silicon Valley arrived at the Lisbon Challenge with a crazy idea. He created a secret code to challenge each one of the 30 startups in the Lisbon Challenge and he will only invest in the first ones that give him the correct secret code.
Avg. Reward: 173 (87%) in 58 submissions
In this challenge you are a music event manager and you have some music shows to organize in 2014. You need to go through your list of bands and check how many bands you have available to each show, based on their style and their free time.
Avg. Reward: 225 (90%) in 117 submissions
In this challenge you will receive a string with a user comment in your social network and you will need to retreive the valid #hashtags that the user inserted during the comment.
Avg. Reward: 387 (77%) in 38 submissions
In this challenge you will need to develop the algorithm for a vending machine your company is creating.
Avg. Reward: 373 (93%) in 87 submissions
In this challenge you will be the judge in a Rock-Paper-Scissor (RPS) tournament. The rules of RPS are simple: Rock (R) beats Scissor (S), Scissor (S) beats Paper (P) and Paper (P) beats Rock (R).
Avg. Reward: 179 (90%) in 105 submissions
In this challenge you will receive a string containing two dates and you need to validate a few things about those dates.
Avg. Reward: 127 (85%) in 131 submissions
In this challenge you will have to analyze a string of text and gather some analytics about the text.
Avg. Reward: 196 (65%) in 644 submissions
In this challenge you will receive the coordinates of two squares and you need to determine if there is an overlapping region formed by those two squares and the area of that region.
Avg. Reward: 95 (95%) in 275 submissions
In this challenge you need to build a basic calculator that can perform actions like add, subtract, multiply and divide.
Avg. Reward: 99 (99%) in 317 submissions
There are N characters in an array A. All the characters occur only once except one that ocurs twice. Your task is to find out that character that occurs twice. All characters will be lowercase.