Leetcode Problem 2772. Apply Operations to Make All Array Elements Equal to Zero

2772. Apply Operations to Make All Array Elements Equal to Zero

Leetcode Solutions

Greedy Approach with Auxiliary Array

  1. Initialize an auxiliary array arr of length nums.length + 1 with all zeros.
  2. Initialize a variable h to keep track of the number of decrements needed so far.
  3. Iterate through the nums array: a. Subtract arr[i] from h. b. Compare the current element nums[i] with h:
    • If nums[i] > h, update arr[i + k] with the difference nums[i] - h and set h to nums[i].
    • If nums[i] < h, return false as it's not possible to make all elements zero. c. If i + k is beyond the array's length, return false.
  4. If the loop completes without returning false, return true.
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Difference Array Approach

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