How to Solve Optimal Division Problem
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Optimal Division
You are given an integer array nums. The adjacent integers in nums will perform the float division. For example, for nums = [2,3,4], we will evaluate the expression "2/3/4". However, you can add any n...
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Understanding the Optimal Division Problem
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Problem Statement
You are given an integer array nums. The adjacent integers in nums will perform the float division. For example, for nums = [2,3,4], we will evaluate the expression "2/3/4". However, you can add any number of parenthesis at any position to change the priority of operations. You want to add these parentheses such the value of the expression after the evaluation is maximum. Return the corresponding expression that has the maximum value in string format. Note: your expression should not contain redundant parenthesis.
Optimal Division
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Examples
nums = [1000,100,10,2]"1000/(100/10/2)"1000/(100/10/2) = 1000/((100/10)/2) = 200 However, the bold parenthesis in "1000/((100/10)/2)" are redundant since they do not influence the operation priority. So you should return "1000/(100/10/2)". Other cases: 1000/(100/10)/2 = 50 1000/(100/(10/2)) = 50 1000/100/10/2 = 0.5 1000/100/(10/2) = 2
nums = [2,3,4]"2/(3/4)"(2/(3/4)) = 8/3 = 2.667 It can be shown that after trying all possibilities, we cannot get an expression with evaluation greater than 2.667
Constraints
1 <= nums.length <= 102 <= nums[i] <= 1000There is only one optimal division for the given input.How Interview Coder Helps with Leetcode Problems
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