Number Of Ways To Split Array In PHP
Prefix sum and total sum are computed for efficient comparisons. Iterate over array, checking if prefix sum is >= remaining sum (total sum - prefix sum). Time complexity: O(n), space complexity: O(1).
2270. Number of Ways to Split Array Difficulty: Medium Topics: Array, Prefix Sum You are given a 0-indexed integer array nums of length n. nums contains a valid split at index i if the following are true: The sum of the first i + 1 elements is greater than or equal to the sum of the last n - i - 1 elements. There is at least one element to the right of i. That is, 0 <= i < n - 1. Return the number of valid splits in nums. Example 1: Input: nums = [10,4,-8,7] Output: 2 Explanation: There are three ways of splitting nums into two non-empty parts: Split nums at index 0. Then, the first part i...