将Double转换为Int数组？ [英] Converting Double into Int Array?

问题描述

我在一个程序上工作，用户输入一个double，然后我把double复制到一个数组中（然后我做了一些其他的东西）。
问题是，我不知道如何拆分数字，并把它放入一个int数组。请帮助？

Im working on a program, where the user inputs a double, and I split the double up and put it into an array(Then I do some other stuff). The problem is, im not sure how to split up the double by digit, and put it into an int array. Please help?

Heres what im looking for：

Heres what im looking for:

    double x = 999999.99 //thats the max size of the double
    //I dont know how to code this part
    int[] splitD = {9,9,9,9,9,9}; //the number
    int[] splitDec = {9,9}; //the decimal

推荐答案

您可以将数字转换为 String 然后根据分割字符串。字符。

You can convert the number to String then split the String based on . character.

例如：

public static void main(String[] args) {
        double x = 999999.99; // thats the max size of the double
        // I dont know how to code this part
        int[] splitD = { 9, 9, 9, 9, 9, 9 }; // the number
        int[] splitDec = { 9, 9 }; // the decimal

        // convert number to String
        String input = x + "";
        // split the number
        String[] split = input.split("\\.");

        String firstPart = split[0];
        char[] charArray1 = firstPart.toCharArray();
        // recreate the array with size equals firstPart length
        splitD = new int[charArray1.length];
        for (int i = 0; i < charArray1.length; i++) {
            // convert char to int
            splitD[i] = Character.getNumericValue(charArray1[i]);
        }

        // the decimal part
        if (split.length > 1) {
            String secondPart = split[1];
            char[] charArray2 = secondPart.toCharArray();
            splitDec = new int[charArray2.length];
            for (int i = 0; i < charArray2.length; i++) {
                // convert char to int
                splitDec[i] = Character.getNumericValue(charArray2[i]);
            }
        }
    }

这篇关于将Double转换为Int数组？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！