Problem

You are given an m x n integer grid accounts where accounts[i][j] is the amount of money the ith customer has in the jth bank. Return the wealth that the richest customer has.

A customer’s wealth is the amount of money they have in all their bank accounts. The richest customer is the customer that has the maximum wealth.

Examples

Example 1:

Input: accounts =[[1,2,3],[3,2,1]]
Output: 6
Explanation:
`1st customer has wealth = 1 + 2 + 3 = 6`
`2nd customer has wealth = 3 + 2 + 1 = 6`
Both customers are considered the richest with a wealth of 6 each, so return 6.

Example 2:

Input: accounts =[[1,5],[7,3],[3,5]]
Output: 10
Explanation:
1st customer has wealth = 6
2nd customer has wealth = 10 
3rd customer has wealth = 8
The 2nd customer is the richest with a wealth of 10.

Example 3:

Input: accounts =[[2,8,7],[7,1,3],[1,9,5]]
Output: 17

Solution

Method 1 - Simply Add All Row Values and Get Max

Code:

public int maximumWealth(int[][] accounts) {
	return Arrays.stream(accounts).mapToInt(i -> Arrays.stream(i).sum()).max().getAsInt();
}