#2772
Apply Operations to Make All Array Elements Equal to Zero
expert · 1090 · lc medium +32 · verified · 33.3% accepted · 447 likes · top 11%
Description
A 0-indexed integer array nums and a positive integer k are given. You may apply the following operation any number of times:
- Choose any contiguous subarray of size k and decrement every element by 1.
Return true if all elements can be reduced to 0, or false otherwise.
A subarray is a contiguous non-empty part of an array.
Example 1:
Input: nums = [2,2,3,1,1,0], k = 3
Output: true
Explanation: We can do the following operations:
- Choose the subarray [2,2,3]. The resulting array will be nums = [1,1,2,1,1,0].
- Choose the subarray [2,1,1]. The resulting array will be nums = [1,1,1,0,0,0].
- Choose the subarray [1,1,1]. The resulting array will be nums = [0,0,0,0,0,0].
Example 2:
Input: nums = [1,3,1,1], k = 2
Output: false
Explanation: It is not possible to make all the array elements equal to 0.
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