解法:
1.假定財富為0
2.透過forEach走訪,並將值透過reduce計數,判斷當前財富是否大於財富,是則指派給財富
3.回傳財富結果
JavaScript
/**
* @param {number[][]} accounts
* @return {number}
*/
var maximumWealth = function (accounts) {
let max = 0;
accounts.forEach(a => {
let sum = a.reduce((sum, n) => sum + n, 0);
max = max >= sum ? max : sum
});
return max
};