Introduction to Subsets
Understand the subsets pattern used to solve coding problems that require generating all combinations of elements. Explore how to build subsets incrementally, apply backtracking, and recognize problems that fit this pattern such as permutations and combination sums. Learn practical applications like playlist creation, test case generation, and feature selection in machine learning.
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About the pattern
The subsets pattern is an important strategy to solve coding problems that involve exploring all possible combinations of elements from a given data structure. This pattern can be useful when dealing with sets containing unique elements or arrays/lists that may contain duplicate elements. It is used to generate all specific subsets based on the conditions that the problem provides us.
The common method used is to build the subsets incrementally, including or excluding each element of the original data structure, depending on the constraints of the problem. This process is continued for the remaining elements until all desired subsets have been generated.
Here is the template for generating all subsets, where we incrementally include or exclude each ...