字符串里字母和数字分开！

Question

例如输入“4fdj7ejs4”如何把字母和数字分别提取出来？

Answer 1

@Test
public void test4(){
    String sample = "4fdj7ejs4";
    String num = "";
    String alph = "";
    char[]  arr =  sample.toCharArray();
    for(int i = 0; i < arr.length; i++){
        try{
            int a = Integer.parseInt(String.valueOf(arr[i]));
            num = num.concat(String.valueOf(arr[i]));
        }catch (Exception e){
            alph = alph.concat(String.valueOf(arr[i]));
        }
    }
    System.out.println("字母是："+alph);
    System.out.println("数字是："+num);
}