Introduction

In this blog post, we will explore how to solve the LeetCode problem "1672" using AI. LeetCode is a popular platform for preparing for coding interviews, and with the help of AI tools like Chatmagic, we can generate solutions quickly and efficiently - helping you pass the interviews and get the job offer without having to study for months.

Problem Statement

You are given an m x n integer grid accounts where accounts[i][j] is the amount of money the 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 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 Constraints: m == accounts.length n == accounts[i].length 1 <= m, n <= 50 1 <= accounts[i][j] <= 100

Explanation

Here's the solution to find the wealth of the richest customer:

• Calculate wealth per customer: Iterate through each customer's account list (each row in the accounts matrix) and compute the sum of their money across all banks.
• Track maximum wealth: Maintain a variable to keep track of the maximum wealth encountered so far. Update this variable whenever a customer's wealth exceeds the current maximum.

• Return maximum wealth: After processing all customers, return the maximum wealth found.

• Runtime Complexity: O(m*n), where m is the number of customers and n is the number of banks.

• Storage Complexity: O(1).

Code

    def maximumWealth(accounts):
    """
    Calculates the maximum wealth among all customers.

    Args:
        accounts: A list of lists representing the amount of money each customer has in each bank.

    Returns:
        The maximum wealth among all customers.
    """

    max_wealth = 0
    for customer_accounts in accounts:
        customer_wealth = sum(customer_accounts)
        max_wealth = max(max_wealth, customer_wealth)
    return max_wealth