leetcode2043. 简易银行系统(java & python3)

洗完澡等头发干 顺手做一下每日一题 属于中等题里面的简单题 简单设计题 

java:

class Bank {
    long[] balance;

    public Bank(long[] balance) {
        this.balance = balance;
    }
    
    public boolean transfer(int account1, int account2, long money) {
        if(account1 > balance.length || account2 > balance.length || balance[account1 - 1] < money){
            return false;
        }
        balance[account1 - 1] -= money;
        balance[account2 - 1] += money;
        return true;
    }
    
    public boolean deposit(int account, long money) {
        if(account > balance.length){
            return false;
        }
        balance[account - 1] += money;
        return true;
    }
    
    public boolean withdraw(int account, long money) {
        if(account > balance.length || balance[account - 1] < money){
            return false;
        }
        balance[account - 1] -= money;
        return true;
    }
}

python3:

class Bank:

    def __init__(self, balance: List[int]):
        self.balance = balance

    def transfer(self, account1: int, account2: int, money: int) -> bool:
        if account1 > len(self.balance) or account2 > len(self.balance) or self.balance[account1 - 1] < money:
            return False
        self.balance[account1 - 1] -= money
        self.balance[account2 - 1] += money
        return True

    def deposit(self, account: int, money: int) -> bool:
        if account > len(self.balance):
            return False
        self.balance[account - 1] += money
        return True

    def withdraw(self, account: int, money: int) -> bool:
        if account > len(self.balance) or self.balance[account - 1] < money:
            return False
        self.balance[account - 1] -= money
        return True