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LeetCode

Solutions to LeetCode practice questions. Problems attempted to date listed below, from newest to oldest.

Problems solved

# Title Solution Date Time Space Difficulty Notes
387 First Unique Character in a String Python 2018-9-23 O(n) O(1) Easy
155 Min Stack Python 2018-9-23 O(1) O(n) Easy
60 Plus One Python 2018-9-23 O(n) O(1) Easy
20 Valid Parentheses Python 2018-9-23 O(n) O(n) Easy
171 Excel Sheet Column Number Python 2018-9-16 O(n) O(1) Easy
686 Repeated String Match Python 2018-4-30 O(n^2) O(n^2) Easy Time limit exceeded - needs improvement
482 License Key Formatting Python 2018-4-23 O(n) O(n) Easy Solution can be improved - retry later
371 Sum of Two Integers Python 2018-4-11 O(n) O(n) Easy Looked up solution - retry later
283 Move Zeroes Python 2018-3-29 O(n) O(1) Easy
104 Maximum Depth of Binary Tree Python 2018-3-28 O(n) O(h) Easy
136 Single Number Python 2018-3-27 O(n) O(1) Easy
412 Fizz Buzz Python 2018-3-27 O(n) O(n) Easy
344 Reverse String Python 2018-3-26 O(n) O(n) Easy

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