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Leetcode Problem 241. Different Ways to Add Parentheses
241. Different Ways to Add Parentheses
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Leetcode Solutions
Divide and Conquer with Memoization
Solution Idea
Algorithm Steps
Code Implementation
Complexity Analysis
Define a recursive function
compute
that takes the expression as input.
If the expression is a single number, return it as the result.
Iterate through the expression, and for each operator encountered, split the expression into left and right parts.
Recursively call
compute
on the left and right parts to get all possible results for each part.
Combine the results from the left and right parts using the current operator.
Use a memoization map to store and reuse results of sub-expressions.
Return the final list of possible results.
Recursive Solution without Memoization
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