例如:
//乘法表
for (int i =1;i <= 9; i++){
for (int j=1;j <= i; j++){
int num = i * j;
if (num > 9) {
System.out.print(i + "*" + j + "=" + num + " ");
}else{
System.out.print(i + "*" + j + "=" + num + " ");
}
}
for (int j=9;j >= 1; j--){
System.out.print(" ");
}
System.out.println();
}
//输出等腰三角形
for (int i= 1; i <= 5; i++){
for (int j = 1; j <= 5-i; j++){
System.out.print(" ");
}
for (int j = 1;j <= 2*i-1; j++){
System.out.print("*");
}
System.out.println();
}
原文:https://www.cnblogs.com/qq970459424/p/14942212.html