grokking-the-coding-interview-patterns-for-coding-questions__design-gurus ,  the-max-depth-of-binary-tree__depth-first-search__the-algorithms-and-data-structures-interview-crash-course ,  the-algorithms-and-data-structures-interview-crash-course__the-eli5-guy

data-structures-for-coding-interviews-in-java__coderust ,  subarray-sum-divisible-by-k-prefix-sum__two-pointers__the-algorithms-and-data-structures-interview-crash-course ,  the-algorithms-and-data-structures-interview-crash-course__the-eli5-guy

data-structures-for-coding-interviews-in-java__coderust ,  the-algorithms-and-data-structures-interview-crash-course__the-eli5-guy