Day04-for循环的应用
for循环的应用
打印三角形
//打印三角形
public static void main(String[] args) {
for (int i = 1; i <= 5; i++) {
for(int j=5;j>=i;j--){
System.out.print(" ");
}
for (int j=1;j<=i;j++){
System.out.print("*");
}
for (int j = 1; j < i; j++) {
System.out.print("*");
}
System.out.println();
}
打印平行四边形
//打印平行四边形
public static void main(String[] args) {
for (int i = 1; i <= 5; i++) {
for(int j=5;j>=i;j--){
System.out.print(" ");
}
for (int j=1;j<=i;j++){
System.out.print("*");
}
for (int j =5; j>=i; j--) {
System.out.print("*");
}
System.out.println();
}
}
打印正方形
//打印正方形
public static void main(String[] args) {
for (int i = 1; i <= 5; i++) {
for(int j=5;j>=i;j--){
System.out.print("*");
}
for (int j=1;j<=i;j++){
System.out.print("*");
}
for (int j =5; j>=i; j--) {
System.out.print("*");
}
for (int j = 1; j <=i; j++) {
System.out.print("*");
}
System.out.println();
}
}
}