Day 1 (Array) LeetCode - Squares of a Sorted Array LeetCode - Monotonic Array Day 2 (Recursion) LeetCode - K-th Symbol in Grammar LeetCode - Find the Winner of the Circular Game Day 3 (Recursion) GeeksforGeeks - Tower of Hanoi CSES - Tower of Hanoi Medium - Power Sum Day 4 (Backtracking) LeetCode - Permutations LeetCode - Permutations II Day 5 (Backtracking) LeetCode - Subset LeetCode - Subset II Day 6 (Backtracking) LeetCode - Combinations LeetCode - Combination Sum Day 7 (Backtracking) LeetCode - Combination Sum II LeetCode - Combination Sum III