Minimum Operations to Reduce X to Zero - Practice Coding | SlaveCode
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1658. Minimum Operations to Reduce X to Zero
Medium
30 Points
Array
Hash Table
Binary Search
Sliding Window
Prefix Sum
You are given an integer array nums and an integer x. In one operation, you can either remove the leftmost or the rightmost element from the array nums and subtract its value from x. Note that this modifies the array for future operations.
Return the minimum number of operations to reduce x to exactly 0 if it is possible, otherwise, return -1.
Examples
Example 1
Input: nums = [1,1,4,2,3], x = 5
Output: 2
Explanation: The optimal solution is to remove the last two elements to reduce x to zero.
Example 2
Input: nums = [5,6,7,8,9], x = 4
Output: -1
Example 3
Input: nums = [3,2,20,1,1,3], x = 10
Output: 5
Explanation: The optimal solution is to remove the last three elements and the first two elements (5 operations in total) to reduce x to zero.
Constraints
1 <= nums.length <= 105
1 <= nums[i] <= 104
1 <= x <= 109
1658. Minimum Operations to Reduce X to Zero
Medium
30 Points
Array
Hash Table
Binary Search
Sliding Window
Prefix Sum
You are given an integer array nums and an integer x. In one operation, you can either remove the leftmost or the rightmost element from the array nums and subtract its value from x. Note that this modifies the array for future operations.
Return the minimum number of operations to reduce x to exactly 0 if it is possible, otherwise, return -1.
Examples
Example 1
Input: nums = [1,1,4,2,3], x = 5
Output: 2
Explanation: The optimal solution is to remove the last two elements to reduce x to zero.
Example 2
Input: nums = [5,6,7,8,9], x = 4
Output: -1
Example 3
Input: nums = [3,2,20,1,1,3], x = 10
Output: 5
Explanation: The optimal solution is to remove the last three elements and the first two elements (5 operations in total) to reduce x to zero.