实现循环的快速方法

# for 循环
for i in range(10):
    print(i)

# while 循环
i = 0
while i < 10:
    print(i)
    i += 1

// for 循环
for (int i = 0; i < 10; i++) {
    System.out.println(i);
}

// while 循环
int i = 0;
while (i < 10) {
    System.out.println(i);
    i++;
}

// 增强型 for 循环
int[] numbers = {1, 2, 3, 4, 5};
for (int number : numbers) {
    System.out.println(number);
}

// for 循环
for (let i = 0; i < 10; i++) {
    console.log(i);
}

// while 循环
let i = 0;
while (i < 10) {
    console.log(i);
    i++;
}

// do...while 循环
i = 0;
do {
    console.log(i);
    i++;
} while (i < 10);

# 错误的无限循环示例
while True:
    print("This will run forever!")

# 正确的循环示例
count = 0
while count < 10:
    print(count)
    count += 1

# 低效的循环示例
for i in range(10000):
    result = i * i  # 每次都重新计算

# 高效的循环示例
results = [i * i for i in range(10000)]  # 使用列表推导式一次性计算

for i in range(10):
    try:
        if i == 5:
            raise ValueError("An error occurred!")
        print(i)
    except ValueError as e:
        print(f"Caught an exception: {e}")