g2001_2100.s2016_maximum_difference_between_increasing_elements

Class Solution

java.lang.Object

g2001_2100.s2016_maximum_difference_between_increasing_elements.Solution

public class Solution
extends Object

2016 - Maximum Difference Between Increasing Elements.

Easy

Given a 0-indexed integer array nums of size n, find the maximum difference between nums[i] and nums[j] (i.e., nums[j] - nums[i]), such that 0 <= i < j < n and nums[i] < nums[j].

Return the maximum difference. If no such i and j exists, return -1.

Example 1:

Input: nums = [7, 1 , 5 ,4]

Output: 4

Explanation:

The maximum difference occurs with i = 1 and j = 2, nums[j] - nums[i] = 5 - 1 = 4.

Note that with i = 1 and j = 0, the difference nums[j] - nums[i] = 7 - 1 = 6, but i > j, so it is not valid.

Example 2:

Input: nums = [9,4,3,2]

Output: -1

Explanation:

There is no i and j such that i < j and nums[i] < nums[j].

Example 3:

Input: nums = [1 ,5,2, 10 ]

Output: 9

Explanation:

The maximum difference occurs with i = 0 and j = 3, nums[j] - nums[i] = 10 - 1 = 9.

Constraints:

• n == nums.length
• 2 <= n <= 1000
• 1 <= nums[i] <= 109

Constructor Summary

Constructors

Constructor and Description
Solution()

Method Summary

Modifier and Type	Method and Description
int	maximumDifference(int[] nums)

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

maximumDifference

public int maximumDifference(int[] nums)