如何在Java中绘制带星号的倒金字塔
代码如何在Java中绘制带星号的倒金字塔,java,arrays,algorithm,Java,Arrays,Algorithm,代码 public static void main(String[] args) { String text=JOptionPane.showInputDialog("Introduce height"); int height=Integer.parseInt(text); drawInversePiramid(height); } public static void drawInversePiramid(int height){ for(int n
public static void main(String[] args) {
String text=JOptionPane.showInputDialog("Introduce height");
int height=Integer.parseInt(text);
drawInversePiramid(height);
}
public static void drawInversePiramid(int height){
for(int numberasterisks=(height*2)-1,numberspaces=0;numberasterisks>0;numberspaces++,numberasterisks-=2){
//we draw spaces
for(int i=0;i<numberspaces;i++){
System.out.println(" ");
}//we draw the asterisks
for(int j=0;j<numberasterisks;j++){
System.out.println("*");
}//to jump the line
System.out.println("");
}
}
publicstaticvoidmain(字符串[]args){
String text=JOptionPane.showInputDialog(“引入高度”);
int height=Integer.parseInt(文本);
前臂(高度);
}
公共静态空隙率(内部高度){
对于(int numbersterisks=(height*2)-1,numberspaces=0;numbersterisks>0;numberspaces++,numbersterisks-=2){
//我们画空间
对于(int i=0;i你的代码实际上是正确的,除了一个小细节。你到处调用println
,它总是打印到一个换行符。相反,只在每行末尾调用println
,但当你想用星号和空格构建给定行时,只需使用print
。使用你的代码:
public static void drawInversePiramid(int height) {
for (int numberasterisks=(height*2)-1,numberspaces=0;numberasterisks>0;numberspaces++,numberasterisks-=2){
// we draw spaces
for (int i=0; I < numberspaces; i++) {
System.out.print(" ");
}
// we draw the asterisks
for (int j=0; j < numberasterisks; j++) {
System.out.print("*");
}
// to jump the line
System.out.println("");
}
}
drawInversePiramid(3);
除了一个小细节外,您的代码实际上是正确的。您在任何地方调用println
,这将始终打印到换行符。相反,只在每行末尾调用println
,但当您要生成带有星号和空格的给定行时,只需使用print
de:
public static void drawInversePiramid(int height) {
for (int numberasterisks=(height*2)-1,numberspaces=0;numberasterisks>0;numberspaces++,numberasterisks-=2){
// we draw spaces
for (int i=0; I < numberspaces; i++) {
System.out.print(" ");
}
// we draw the asterisks
for (int j=0; j < numberasterisks; j++) {
System.out.print("*");
}
// to jump the line
System.out.println("");
}
}
drawInversePiramid(3);