获取数字的最后一位

2022-01-19 00:00:00 return digits java

我需要定义一个数字的最后一位,并将其分配给 value.在此之后,返回最后一个数字.

I need to define the last digit of a number assign this to value. After this, return the last digit.

我的代码片段不能正常工作...

My snippet of code doesn't work correctly...

代码:

public int lastDigit(int number) {
    String temp = Integer.toString(number);
    int[] guess = new int[temp.length()];
    int last = guess[temp.length() - 1];

    return last;
}

问题:

  • 如何解决这个问题?

推荐答案

只要返回 (number % 10);即取模数.这将比解析输入和输出字符串快得多.

Just return (number % 10); i.e. take the modulus. This will be much faster than parsing in and out of a string.

如果 number 可以为负数,则使用 (Math.abs(number) % 10);

If number can be negative then use (Math.abs(number) % 10);

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