/**

• Created by Administrator on 2018/4/19 0019.
  /
  /
  *Compare.java

  • 比較輸入值得大小並輸出

  • v.1
    */
    public class Compare {
    public static void main(String[] args){
    Scanner input=new Scanner(System.in);
    int num1,num2,num3,a,b,c;
    System.out.println("請輸入a,b,c的值：");

    System.out.println("a："); //先輸入三個數字並儲存
    

    num1=input.nextInt();
    System.out.println("b：");
    num2=input.nextInt();
    System.out.println("c：");
    num3=input.nextInt();

    if(num1>=num2){ //數字比較並排序
    if(num3>=num1){
    c=num3;b=num1;a=num2;
    }else if(num3>=num2){
    c=num1;b=num3;a=num2;
    }else{
    c=num1;b=num2;a=num3;
    }
    } else{
    if(num3>=num2){
    

    c=num3;b=num2;a=num1;
    }else if(num3>=num1){
    c=num2;b=num3;a=num1;
    }else{
    c=num2;b=num1;a=num3;
    }
    }

    System.out.println("比較後a,b,c從小到大是：a="+a+",b="+b+",c="+c); //輸出排序後的數字

  }
  }

Java練習：用IF（）進行數字排序