Problem Description
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.
Key Insights
- The wealth of a customer can be calculated by summing all the bank accounts for that customer.
- We need to iterate through each customer and keep track of the maximum wealth encountered.
- The problem can be solved efficiently given the constraints (1 <= m, n <= 50).
Space and Time Complexity
Time Complexity: O(m * n) - We need to iterate through each customer and each of their accounts. Space Complexity: O(1) - We only need a few variables to store intermediate results.
Solution
To solve this problem, we will use a nested loop to iterate through the 2D array (accounts). For each customer (row in the array), we will sum the values (bank accounts) in that row to calculate the customer's total wealth. We will then compare this wealth with a running maximum to find the richest customer. The data structure used is a 2D array, and the algorithmic approach is straightforward iteration with summation.