List of problems sorted in increasing order of difficulty:
Sorting Algorithm - Selection Sort
Sorting Algorithm - Insertion Sort
Sorting Algorithm - Bubble Sort
Sorting Algorithm - Comb Sort
Pancake Sorting
Merge Sort
Sorting Algorithm - Heap Sort
1822. Sign of the Product of an Array - IDeserve
2660. Determine the Winner of a Bowling Game
Rotate an Array
Fibonacci Number
Merge two sorted arrays without using extra space
Maximum subarray sum
Maximum average subarray of size k
Longest Substring with non-Repeating Characters
Leaders in an array
Find the missing number in the duplicate array
Find Minimum Length Sub Array With Sum K
Binary Search in a Sorted Array
Find first index of an element in a sorted array with duplicates
Find last index of an element in a sorted array with duplicates
Search a sorted matrix
Re-arrange elements in an array to put positive and negative elements in alternate order
Number of clusters of 1s OR Number of Islands
Find the next greater number using same digits
Next greater element in an array
First non-repeating character in a string
Find the number which occurs odd number of times
Find the 'n'th most frequent number in array
Find the missing number in the increasing sequence
Find duplicates in an integer array
Find common elements in 'n' sorted arrays
Find a Peak Element in an array
Distribute Chocolates Problem
Count frequencies of array elements in range 1 to n
Find all permutations of a String
Find pivot in a sorted rotated array
Find an element in a sorted rotated array
Find element in sorted rotated array without finding pivot
Buy and sell stocks | Part 2
Buy and sell stocks | Part 1
921. Minimum Add to Make Parentheses Valid
1249. Minimum Remove to Make Valid Parentheses
Find index of 0 to replace to get longest continuous sequence of 1s
O(n) time approach to find index of 0 to replace to get longest continuous sequence of 1s
Find maximum element from each sub-array of size 'k'| Set 1
Find maximum element from each sub-array of size 'k'| Set 2
1689. Partitioning Into Minimum Number Of Deci-Binary Numbers
Trapping Rain Water between Towers
The Skyline Problem
Print a Matrix Diagonally
Minimum number of coins to make change
Find minimum cost path in a matrix
Find maximum value of sum of index element products(i*array[i]) with only rotations allowed on a given array
Maximum size square sub-matrix with all 1s
Longest Subset With Consecutive Numbers
Find the length of longest increasing subsequence in an array
Longest Increasing Subsequence O(n logn)
Find the length of longest bitonic subsequence in an array
Given an array with all distinct elements, find the length of the longest sub-array which has elements(not in any particular order) that could form a contiguous sequence
Find an integer array corresponding to the string specifying increase-decrease transitions
Gold Mine Problem
Find the Element That Appears Once in an Array
Find median of two sorted arrays
Find Majority Element in an Array
0-1 Knapsack Problem
Count all possible decodings of a given digit sequence
Find total number of ways to make change using given set of coins
Find increasing sub-sequence of length three having maximum product
Find increasing sub-sequence of length three having maximum product | Optimized approach
Set Partition Problem | Recursion
Set Partition Problem | Dynamic Programming
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