DSA Problems
Solutions to leetcode problems
Articles
Combination Sum
MediumBacktracking
Sum of All Subset XOR Totals
EasyBacktracking
Binary Tree Paths
Find all root to leaf paths
EasyBacktracking & recursion
3Sum
Find list of unique triplets that sum up to zero.
MediumSorting, Binary Search
Remove Duplicates From Sorted Array
EasyTwo Pointer
First Missing Positive
Find smallest positive integer not present in the array.
HardArray Indices as Marker
Two Sum
Find 2 numbers in the array that add up to the target sum.
EasyHashMap