Package g1601_1700.s1658_minimum_operations_to_reduce_x_to_zero

Class Solution

java.lang.Object
g1601_1700.s1658_minimum_operations_to_reduce_x_to_zero.Solution
public class Solution extends java.lang.Object
1658 - Minimum Operations to Reduce X to Zero.

Medium

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.

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

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    minOperations(int[] nums, int x)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • minOperations

      public int minOperations(int[] nums, int x)