Month: October 2019

Count Primes | LeetCode 204 (Sieve of Eratosthenes)

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Fizz Buzz | LeetCode 412 (Three Methods)

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To Lower Case | LeetCode 709 (Three Methods)

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Contains Duplicate II | LeetCode 219

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Reverse String | LeetCode 344

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Pascal’s Triangle II | LeetCode 119

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Pascal’s Triangle | LeetCode 118

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Third Maximum Number | LeetCode 414

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Contains Duplicate | LeetCode 217

This question asks you to determine if an array contains any duplicates. The array [1, 2, 1] does contain a duplicate — the number 1 is repeated. On the other hand, the array [4, 3, 6] does not have any duplicates since no numbers are repeated. The key to solving this problem is to loop …

Contains Duplicate | LeetCode 217 Read More »

Delete Node in a Linked List | LeetCode 237

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