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I can't figure out why my code doesn't work. It works when I try it in repl.it, is it because it doesn't make the time constraint?? Thanks! function isDollarDeleteEqual { let mapped = arr.map); return mapped.every; } function getFinalStr { let arr...

1 post

Dollar Sign Deletion (Main Thread)

Challenges • Last reply from yorkcook13 at March 24, 2021 at 6:25PM UTC

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5 posts

Invert a Binary Tree (Main Thread)

Challenges • Last reply from Jake from AlgoDaily at March 24, 2021 at 3:30PM UTC

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3 posts

Fizz Buzz (Main Thread)

Challenges • Last reply from Ragnar at March 23, 2021 at 7:45AM UTC

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12 posts

Error: Class, interface or enum expected

General • Last reply from sanya mehta at March 5, 2021 at 5:46AM UTC

Hi, I'm trying to use the IDE in Java, but no matter what code I run, I get multiple errors saying "class, interface, or enum expected" despite the fact that the curly braces check out and that the primary function is within the Main method. Any t...

1 post

Decimal To Binary (Main Thread)

Challenges • Last reply from Rahat Zaman at February 26, 2021 at 11:02AM UTC

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4 posts

Lonely Number (Main Thread)

Challenges • Last reply from Vits94 at February 18, 2021 at 10:18PM UTC

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9 posts

Count The Planes (Main Thread)

Challenges • Last reply from Rahat Zaman at February 16, 2021 at 1:51PM UTC

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4 posts

Array Intersection

Challenges • Last reply from Rahat Zaman at February 16, 2021 at 7:47AM UTC

oh my gosh

22 posts

An Executable Data Structures Cheat Sheet (Main Thread)

General • Last reply from aziz at February 11, 2021 at 4:20PM UTC

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5 posts

Identical Trees (Main Thread)

Challenges • Last reply from Rahat Zaman at February 5, 2021 at 4:16PM UTC

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3 posts

Find Missing Number in Array (Main Thread)

Challenges • Last reply from Jake from AlgoDaily at January 26, 2021 at 6:11PM UTC

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7 posts

Is An Anagram

Challenges • Last reply from Ray at January 25, 2021 at 4:05PM UTC

Since the previous challenge already mentioned time complexities. It should be mentioned that the sorting solution is Quasilinear O and a linear solution exists. If you create a set from both strings O and then check that both strings are subsets ...

7 posts

Two Sum (Main Thread)

Challenges • Last reply from Jake from AlgoDaily at January 25, 2021 at 3:21AM UTC

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8 posts

Find First Non-Repeating Character (Main Thread)

Challenges • Last reply from Jake from AlgoDaily at January 22, 2021 at 2:27PM UTC

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3 posts

Dutch National Flag Problem (Main Thread)

Challenges • Last reply from Dmitry Pavlov at January 19, 2021 at 2:29PM UTC

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3 posts

Balanced Brackets (Main Thread)

Challenges • Last reply from daviton at January 18, 2021 at 2:40PM UTC

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2 posts

Power Of Three (Main Thread)

Challenges • Last reply from Rudy at January 13, 2021 at 6:51AM UTC

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8 posts

Using The Two Pointer Technique (Main Thread)

General • Last reply from Rudy at January 11, 2021 at 11:50PM UTC

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5 posts

Least Positive Number Explanation

Challenges • Last reply from Jake from AlgoDaily at January 10, 2021 at 12:46AM UTC

I do not understand the explanation of this problem nums[nums[i] - 1] != nums[i]) can give ArrayIndexOutOfBounds Exception as we are assuming that nums[i] will be an index Besides this, explanation states we are comparing the current number wi...

2 posts

Reverse A String (Main Thread)

Challenges • Last reply from Jake from AlgoDaily at January 8, 2021 at 6:49PM UTC

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13 posts

A Birds Eye View Into Sliding Windows (Main Thread)

General • Last reply from Dmitry Pavlov at January 7, 2021 at 8:08AM UTC

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9 posts

Trapping Rain Water (Main Thread)

Challenges • Last reply from Jake from AlgoDaily at January 4, 2021 at 2:14PM UTC

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5 posts

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Sum All Primes (Main Thread)

Max Rectangle In A Histogram (Main Thread)

Missing Number In Unsorted (Main Thread)

Zeros To The End (Main Thread)

Max Product Of Three Numbers (Main Thread)

Two Stack Queue (Main Thread)

Majority Element (Main Thread)

Can't Figure Out Why Not Working

Dollar Sign Deletion (Main Thread)

Invert a Binary Tree (Main Thread)

Fizz Buzz (Main Thread)

Error: Class, interface or enum expected

Decimal To Binary (Main Thread)

Lonely Number (Main Thread)

Count The Planes (Main Thread)

Array Intersection

An Executable Data Structures Cheat Sheet (Main Thread)

Identical Trees (Main Thread)

Find Missing Number in Array (Main Thread)

Is An Anagram

Two Sum (Main Thread)

Find First Non-Repeating Character (Main Thread)

Dutch National Flag Problem (Main Thread)

Balanced Brackets (Main Thread)

Power Of Three (Main Thread)

Using The Two Pointer Technique (Main Thread)

Least Positive Number Explanation

Reverse A String (Main Thread)

A Birds Eye View Into Sliding Windows (Main Thread)

Trapping Rain Water (Main Thread)