Richest Customer Wealth LeetCode Solution - The Coding Shala

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 In this post, we will learn how to solve LeetCode's Richest Customer Wealth problem and will implement its solution in Java.

Richest Customer Wealth Problem

You are given an m x n integer grid accounts where accounts[i][j] is the amount of money i​​​​​​​​​​​th​​​​ customer has in the j​​​​​​​​​​​th​​​​ 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.

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

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

Practice this problem on LeetCode.

LeetCode - Richest Customer Wealth Java Solution

Approach 1

Brute Force solution.

Time Complexity: O(m * n)

Java Program: 

class Solution {
    public int maximumWealth(int[][] accounts) {
        int wealth = -1;
        for(int i = 0; i < accounts.length; i++) {
            int temp_sum = 0;
            for(int j = 0; j < accounts[i].length; j++) {
                temp_sum += accounts[i][j];
            }
            if(temp_sum > wealth) {
                wealth = temp_sum;
            }
        }
        return wealth;
    }
}


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