- (Easy) strange-counter [question] [solution]
- (Medium) 3d-surface-area [question] [solution]
- (Medium) common-child [question] [solution]
- (Easy) sherlock-and-array [question] [solution]
- (Medium) minimum_swaps_2 [question] [solution]
- (Easy) two_strings [question] [solution]
- (Easy) luck_balance [question] [solution]
- (Hard) poisonous-plants [question] [solution]
- (Medium) max-array-sum [question] [solution]
- (Easy) bst-lowest-common-ancestor [question] [solution]
- (Easy) min-abs-dff [question] [solution]
- (Medium) count-triplets [question] [solution]
- (Hard) array-manipulation [question] [solution]
- (Medium) special-string-again [question] [solution]
- (Medium) castle-on-the-grid [question] [solution]