请教一下！金字塔这个问题！！！！

[hz0369]

package Tset;

import java.util.Scanner;

public class test {

public static void main(String[] args) {
Scanner scan=new Scanner(System.in);
System.out.print("請輸入行數：");
int line =scan.nextInt();
for (int i=1;i<=line;i++){
int start =2*i-1;
int space=line-1;
for (int j=0;j<space;j++){
System.out.print(' ');
}
for (int k=1;k<=start;k++){
System.out.print('*');
}
System.out.println();
}
}
}
请问下这个代码哪里有问题 ，输出的不是金字塔形状。。。

[java小白脸]

space 值一直未变，每一行前的空格都是相等的！所以不是金字塔样子！

[java小白脸]

你试试改为int space≡line－i;

[sinat_40844844]

package Test; import java.util.Scanner; public class practice { public static void main(String[] args) { Scanner scan=new Scanner(System.in); System.out.print("請輸入行數："); int line =scan.nextInt(); for (int i = 0;i < line; i++){ int start =2*i+1; int space=line-1-i; for (int j=0;j<space;j++){ System.out.print(' '); } for (int k=0;k<start;k++){ System.out.print('*'); } System.out.println(); } } }

[sinat_40844844]

上面是我修改的，跟前面几个的说法一样，但是我还是比较习惯从0开始，适应编程的计数方式

[自由自在_Yu]

改成int space = line - i;//空格是越来越少的，line - 1是个固定值

[不会VS]

package Test; import java.util.Scanner; public class practice { public static void main(String[] args) { Scanner scan=new Scanner(System.in); System.out.print("請輸入行數："); int line =scan.nextInt(); for(int i=1;i<=line;i++){ for(int j=1;j<=line-i;j++) System.out.print(' '); for(int k=1;k<2*i-1;k++) System.out.print('*'); System.out.print('\n'); } } }

[TE_apple]

import java.util.*; public class Test{ public static void main(String [] args){ Scanner ss=new Scanner(System.in); System.out.println("请输入金字塔层数:"); int cengshu=ss.nextInt(); for(int i=1;i<=cengshu;i++){ for(int j=i-1;j<=cengshu-1;j++){ System.out.print(" "); } int t=i; for(int x=1;x<=2*t-1;x++){ System.out.print("*"); } System.out.println(); } } } 金字塔

[TE_apple]

import java.util.*; public class Test{ public static void main(String [] args){ Scanner ss = new Scanner(System.in); System.out.println("请输入金字塔的层数："); int cengshu = ss.nextInt(); for(int i=0;i<cengshu;i++){ for(int j=cengshu-1;j>i;j--){ System.out.print(" "); } int a = i; for(int t=0;t<2*a+1;t++){ System.out.print("*"); } System.out.println(); } } } 金字塔方法2

[fcyh]

import java.util.*;
public class Test{
public static void main(String [] args){
Scanner ss = new Scanner(System.in);
System.out.println("请输入金字塔的层数：");
int cengshu = ss.nextInt();
for(int i=0;i<cengshu;i++){
for(int j=cengshu-1;j>i;j--){
System.out.print(" ");

}
int a = i;
for(int t=0;t<2*a+1;t++){
System.out.print("*");
}
System.out.println();	

}


}

}