Question

JAVA控制台输入数字替换其中一段为星号再打印

Answer 1

String s1;
输入s1
StringBuilder sb=new StringBuilder();
for(int s=0; i<s1.length; i++) {
char c=s1.chatAt(i);
if('0'<=i && i<='9') sb.append(c); else sb.append('*');
}
System.out.println(sb.toString());
}