Sorting :
- https://codeforces.com/problemset/problem/600/B
- https://cses.fi/problemset/task/1090
- https://codeforces.com/problemset/problem/1490/E
- Editorials :
Binary Search:
- https://www.codechef.com/problems/GGBUNNY
- https://www.hackerearth.com/practice/algorithms/searching/binary-search/practice-problems/algorithm/flipping-the-string-831bbbbe/
- https://codeforces.com/problemset/problem/1468/D
- Editorials :
DP:
Easy :
- https://codeforces.com/problemset/problem/698/A
- https://atcoder.jp/contests/dp/tasks/dp_d
- https://practice.geeksforgeeks.org/problems/ways-to-tile-a-floor5836/1
- Editorials :
Moderate :
- https://practice.geeksforgeeks.org/problems/gold-mine-problem2608/1
- https://atcoder.jp/contests/dp/tasks/dp_e
- https://codeforces.com/contest/1525/problem/D
- Editorials :
Linear Data Structures :
Easy :
- https://practice.geeksforgeeks.org/problems/delete-without-head-pointer/1
- https://leetcode.com/problems/implement-stack-using-queues/
- https://codeforces.com/contest/343/problem/B
- Editorials :
Moderate :
- https://leetcode.com/problems/add-two-numbers/solution/
- https://codeforces.com/contest/797/problem/C
- https://practice.geeksforgeeks.org/problems/rotten-oranges2536/1
- Editorials :
Graph Algos:
BFS/DFS
- https://codeforces.com/problemset/problem/520/B
- https://practice.geeksforgeeks.org/problems/two-water-jug-problem3402/1
- https://codeforces.com/problemset/problem/580/C
- Editorials :
Shortest Path
- https://www.hackerearth.com/practice/algorithms/graphs/shortest-path-algorithms/practice-problems/algorithm/cross-the-river-052be366/
- https://codeforces.com/problemset/problem/329/B
- https://www.spoj.com/problems/DELIVER/
- Editorials :
Miscellaneous :
- https://www.geeksforgeeks.org/find-number-of-islands/
- https://leetcode.com/problems/longest-common-subsequence/
- https://practice.geeksforgeeks.org/problems/sum-of-left-leaf-nodes/1
- https://www.interviewbit.com/problems/sliding-window-maximum/
- https://leetcode.com/problems/trapping-rain-water/
- https://www.interviewbit.com/problems/median-of-array/
- Editorials :
- https://www.geeksforgeeks.org/find-number-of-islands/
- https://leetcode.com/problems/longest-common-subsequence/hints/
- https://www.geeksforgeeks.org/find-sum-left-leaves-given-binary-tree/
- https://www.geeksforgeeks.org/sliding-window-maximum-maximum-of-all-subarrays-of-size-k/
- https://leetcode.com/problems/trapping-rain-water/solution/
- https://www.geeksforgeeks.org/median-of-two-sorted-arrays-of-different-sizes/