LeetCodeSolutions

LeetCode Topics

Array

Problem Name	Difficulty
0001-two-sum	Easy
0004-median-of-two-sorted-arrays	Hard
0066-plus-one	Easy
0075-sort-colors	Medium
0448-find-all-numbers-disappeared-in-an-array	Easy
0485-max-consecutive-ones	Easy
1365-how-many-numbers-are-smaller-than-the-current-number	Easy
1470-shuffle-the-array	Easy
1502-can-make-arithmetic-progression-from-sequence	Easy
1929-concatenation-of-array	Easy

Hash Table

Problem Name	Difficulty
0001-two-sum	Easy
0013-roman-to-integer	Easy
0448-find-all-numbers-disappeared-in-an-array	Easy
1365-how-many-numbers-are-smaller-than-the-current-number	Easy

Math

Problem Name	Difficulty
0009-palindrome-number	Easy
0013-roman-to-integer	Easy
0043-multiply-strings	Medium
0050-powx-n	Medium
0066-plus-one	Easy
0069-sqrtx	Easy
2485-find-the-pivot-integer	Easy

String

Problem Name	Difficulty
0013-roman-to-integer	Easy
0028-find-the-index-of-the-first-occurrence-in-a-string	Easy
0043-multiply-strings	Medium
0125-valid-palindrome	Easy

Simulation

Problem Name	Difficulty
0043-multiply-strings	Medium
1929-concatenation-of-array	Easy

Recursion

Problem Name	Difficulty
0050-powx-n	Medium

Two Pointers

Problem Name	Difficulty
0028-find-the-index-of-the-first-occurrence-in-a-string	Easy
0075-sort-colors	Medium
0125-valid-palindrome	Easy

String Matching

Problem Name	Difficulty
0028-find-the-index-of-the-first-occurrence-in-a-string	Easy

Binary Search

Problem Name	Difficulty
0004-median-of-two-sorted-arrays	Hard
0069-sqrtx	Easy

Sorting

Problem Name	Difficulty
0075-sort-colors	Medium
1365-how-many-numbers-are-smaller-than-the-current-number	Easy
1502-can-make-arithmetic-progression-from-sequence	Easy

Divide and Conquer

Problem Name	Difficulty
0004-median-of-two-sorted-arrays	Hard

Counting Sort

Problem Name	Difficulty
1365-how-many-numbers-are-smaller-than-the-current-number	Easy

Prefix Sum

Problem Name	Difficulty
2485-find-the-pivot-integer	Easy