Google Interview Prep: Subsets Explained Visually

インデックス作成: 2026-05-19

[00:00:00]Struggling to generate all possible combinations?

[00:00:03]You need the subsets pattern.

[00:00:06]For every element, we make a simple choice, include it or exclude it.

[00:00:10]This creates a beautiful binary decision tree.

[00:00:13]We explore every path down to the leaves to find our subsets.

[00:00:17]Since we make two choices for n elements, the time complexity [music] is strictly O of 2 to the n.

[00:00:23]Subsets mastered.

[00:00:25]You're ready for the interview.

[00:00:31]>> [music]