Zero Array Transformation I
You are given an integer array nums of length n and a 2D array queries, where queries[i] = [li, ri].
For each queries[i]:
- Select a subset of indices within the range
[li, ri]innums. - Decrement the values at the selected indices by
1.
A Zero Array is an array where all elements are equal to 0.
Return true if it is possible to transform nums into a Zero Array after processing all the queries sequentially, otherwise return false.
Example 1
Input
nums = [1,0,1], queries = [[0,2]]Output
trueSelecting indices 0 and 2 for the only query decrements both 1s, making the array [0, 0, 0].
Example 2
Input
nums = [4,3,2,1], queries = [[1,3],[0,2]]Output
falseEven after applying both queries, the array can become [3, 1, 0, 0], which is not a Zero Array.
Constraints
- 1 <= nums.length <= 10^5
- 0 <= nums[i] <= 10^5
- 1 <= queries.length <= 10^5
- queries[i].length == 2
- 0 <= li <= ri < nums.length