王怡庭w3schools.java雙迴圈,int整數String字串+串接,運算子operator
java程式碼 /*王怡庭2022/10/17w3schools學習迴圈*/ 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