Leetcode Problem 2485. Find the Pivot Integer
Leetcode Solutions
Using Prefix Sum and Sum of Natural Numbers Formula
- Calculate the total sum of numbers from 1 to
nusing the formulatotalSum = n * (n + 1) / 2. - Initialize
leftSumto 0 to keep track of the running sum. - Iterate through numbers from 1 to
n: a. Add the current number toleftSum. b. IftotalSum - leftSum + current numberequalsleftSum, return the current number as the pivot integer. - If no pivot integer is found, return -1.
Brute Force Search for Pivot Integer
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