1672. Richest Customer Wealth
Description
You are given an m x n
integer grid accounts
where accounts[i][j]
is the amount of money the iβββββββββββthββββ
customer has in the jβββββββββββth
ββββ 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
Solutions
Solution 1: Summation
We traverse accounts
and find the maximum sum of each row.
The time complexity is $O(m \times n)$, where $m$ and $n$ are the number of rows and columns in the grid, respectively. The space complexity is $O(1)$.
1 2 3 |
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 |
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1 2 3 4 5 6 7 8 9 10 |
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1 2 3 4 5 6 7 8 9 10 11 12 13 |
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1 2 3 4 5 6 7 8 9 10 |
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1 2 3 4 5 |
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 |
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1 2 3 4 5 6 7 8 9 10 11 12 13 |
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