林葆蕙w3shools,java雙迴圈,int整數,String字串,+串接,運算子operator

Java程式碼

/*林葆蕙2022/10/17w3schools學雙迴圈,運算子Operator,運算元operand*/
public class Main {
  public static void main(String[] args) {  
    int i, j;                    /*宣告整數integer變數i, j*/    
    String a="第", b="列:";       /*宣告整數字串a, b給初始值*/
    for ( i = 0; i < 8; i++) {   /*迴圈*/
      System.out.print(a + i + b);/*+運算子用在字串,串接功能*/
    for ( j = 0; j <= i; j++)/*迴圈內僅有一道指令,可以不加{...}*/
       System.out.print(j);     /*print輸出完,下一個print在後面,*/
    System.out.println();       /*printIn輸出完換列line,()的空,只有換列*/
    
    
    }  
  }
}

/*林葆蕙2022/10/17w3schools學雙迴圈,運算子Operator,運算元operand*/
public class Main {
  public static void main(String[] args) {
  int i,j;/*宣告整數integer變數i*/
  String a="第",b="列";/*宣告整數字串a,b給初始值*/
    for ( i = 0; i <= 8; i=i+1) {/*迴圈*/
      System.out.print(a+i+b);/*運算子用在字串,串接功能*/
      for ( j = 0; j <= i; j++)/*回圈內僅有一道指令,可以不加(...)*/
      System.out.print(j);/*print輸出完,下一個print在後面*/
      System.out.println();/*println輸出完換列line,()空的,只有換列*/
    }  
  }
}
for(i=40485; i<40500; i++)
{a=Charater.toString(i);
System.out.println(i+a);}