方思涵v3schools.Java雙層迴圈.int整數.String字串.串接+運算子operator

Java程式碼

public class Main {
  public static void main(String[] args) {
  	int i, j;
    String a="第", b="列:";
    for ( i = 0; i < 8; i++) {
      System.out.print(a+i+b);
      	for ( j = 0; j <= i; j++) 
        	System.out.print(j);
      			System.out.println();
    }  
  }
}
額外練習
public class Main {
  public static void main(String[] args) {
    for (int i = 40845; i < 40860; i++)
    {String a=Character.toString(i);
    	System.out.print(i+"字碼的字元是"+a);
        	System.out.println();
     }
     }
  }
                                  

w3schools程式碼截圖記錄