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 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 and Description
Solution()

Method Summary

Modifier and Type	Method and 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 Detail

Solution

public Solution()

Method Detail

minOperations

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