Question

假设我正在使用此代码将String（包含数字）转换为字符数组，我想将其转换为数字数组（int）。

（然后我想为另一个数字字符串执行此操作，并添加两个int数组以提供另外一个添加的int数组。）

我该怎么办？

import java.util.Scanner;


public class stringHundredDigitArray {

    /**
     * @param args
     */
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter the number: ");
        String num1 = in.nextLine();
        char[] num1CharArray = num1.toCharArray();
        //for (int i = 0; i < num1CharArray.length; i++){
            //System.out.print(" "+num1CharArray[i]);
        //}

        int[] num1intarray = new int[num1CharArray.length];
        for (int i = 0; i < num1CharArray.length; i++){
            num1intarray[i] = num1CharArray[i];
        }

        for (int i = 0; i < num1intarray.length; i++){ //this code prints presumably the ascii values of the number characters, not the numbers themselves. This is the problem.
            System.out.print(" "+num1intarray[i]);
        }
    }

}

我真的必须拆分字符串，最好是一组可添加的数据类型。

Answer 1

尝试Character.getNumericValue(char);这个：

for (int i = 0; i < num1CharArray.length; i++){
    num1intarray[i] = Character.getNumericValue(num1CharArray[i]);
}

Answer 2

Try This :
     int[] num1intarray = new int[num1CharArray.length];
    for (int i = 0; i < num1CharArray.length; i++)
        {
         num1intarray[i]=Integer.parseInt(""+num1CharArray[i]);
        System.out.print(num1intarray[i]); 
       }

Answer 3

简短而简单的解决方案！

int[] result = new int[charArray.length]; 
Arrays.setAll(result, i -> Character.getNumericValue(charArray[i]));

如何将char数组转换为int数组？

3 个答案: