solutions.py

#arrays Title: 1089. Duplicate Zeros URL: leetcode Level: Easy github

Better solution (not by me :) )

194 viewsedited 19:41

#arrays
Title: 905. Sort Array By Parity (In-place)
URL: leetcode
Level: Easy
github
! still not very optimized

206 views06:32

solutions.py

#hash_table
Title: 442. Find All Duplicates in an Array
URL: leetcode
Level: Medium

197 views18:52

solutions.py

#arrays
Title: 929. Unique Email Addresses
URL: leetcode
Level: Easy

228 views12:49

solutions.py

Title: Nth Fibonacci Number URL: binarysearch.com Level: easy

#memoization

240 views20:24

solutions.py

#dp
Title: N-th Tribonacci Number
URL: leetcode
Level: Easy

261 views18:38

solutions.py

#dp
Title: Climbing Stairs
URL: leetcode
Level: Easy

273 views19:23

solutions.py

#stack
Title: 496. Next Greater Element I
URL: leetcode
Level: Easy
github

Long way implementation of stack😉

136 views05:35

solutions.py

#stack
Title: Score of Parentheses
URL: leetcode
Level: Medium
github

Time: O(N)
Space: O(N)

👍1

159 views12:34

solutions.py

#graph #dfs

Title: Flood fill
URL: leetcode
Level: Easy
github

👍1

152 views05:57

solutions.py

#tree #dfs

Title: Same Tree
URL: leetcode
Level: Easy
github

Time: O(N) -> O(q+p)

👍1

145 views10:34

solutions.py

#tree #dfs

Title: Maximum Depth of Binary Tree
URL: leetcode
Level: Easy

👍2

162 views13:57

solutions.py

#dp
Title: Jump Game II
URL: leetcode
Level: Medium

👍1

124 views17:15

solutions.py

Title: 20. Valid Parentheses Url: leetcode Time complexity: O(n^2) 😐😐

#stack
Time: O(n)
leetcode
Source

👍1

155 viewsedited 19:30

solutions.py

#prefix_sum
Title: 303. Range Sum Query - Immutable
leetcode

👍4

136 views19:04

solutions.py

Check this out, it seems very useful quiz about Time Complexity:
https://www.interviews.school/timecomplexity#quiz

👍2

120 views20:00

solutions.py

#subarray

Title: 53. Maximum Subarray
leetcode

(solution is from video, not by me yet)

👍2

132 views18:37

solutions.py

#subarray Title: 53. Maximum Subarray leetcode (solution is from video, not by me yet)

#subarray #prefix_sum
version 2
Title: 53. Maximum Subarray
leetcode
Time: O(N)

👍1

155 views19:05

solutions.py

#sliding_window
Title: 121.Best Time to Buy and Sell Stock
URL: leetcode
Level: Easy

👍2

144 views16:51

solutions.py

#array
Title: 34. Find First and Last Position of Element in Sorted Array
URL: https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/
Level: Medium
Big O: O(N)
version 1

133 views06:29

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