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Problem · Array

Minimum Adjacent Merges to Form a Palindrome

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Problem statement

In one operation, choose two adjacent array elements and replace them with their sum. Return the minimum number of operations needed to make the resulting array a palindrome.

Function

minMergesToPalindrome(nums: int[]) → int

Examples

Example 1

nums = [12,14,8,13,5]return = 3

Three adjacent merges can produce [26, 26], which is a palindrome.

Constraints

1 <= nums.length <= 10^5
1 <= nums[i] <= 10^9