Leetcode Problem 370. Range Addition

370. Range Addition

Leetcode Solutions

Range Caching Approach

  1. Initialize an array arr of length length with all zeros.
  2. Iterate over each update in updates. a. For each update [startIdx, endIdx, inc], increment arr[startIdx] by inc. b. If endIdx + 1 is within bounds, decrement arr[endIdx + 1] by inc.
  3. Perform a cumulative sum on arr from the second element to the end. a. For each index i from 1 to length - 1, add arr[i - 1] to arr[i].
  4. Return the modified arr.
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Naïve Approach

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