Leetcode Problem 2485. Find the Pivot Integer

2485. Find the Pivot Integer

Leetcode Solutions

Using Prefix Sum and Sum of Natural Numbers Formula

  1. Calculate the total sum of numbers from 1 to n using the formula totalSum = n * (n + 1) / 2.
  2. Initialize leftSum to 0 to keep track of the running sum.
  3. Iterate through numbers from 1 to n: a. Add the current number to leftSum. b. If totalSum - leftSum + current number equals leftSum, return the current number as the pivot integer.
  4. If no pivot integer is found, return -1.
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Brute Force Search for Pivot Integer

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