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這是我的代碼,我不知道我在做什麼嚴重的錯誤。我嘗試了很多不同的東西,比如把public修飾符從get中取走。但我仍然得到同樣的東西。這個程序應該打印出pascal三角形中的第N個數字行,以便我使用遞歸一點。爲什麼javac告訴我非法表達的開始?
import java.util.*;
public class Triangle{
private int lineNumber, count;
private int[] num;
public Triangle(){
lineNumber = 1;
}
public Triangle(int n){
set(n);
}
public void set(int n){
if(n < 1){
lineNumber = 1;
}
else{
lineNumber = n;
}
public int get()//Triangle.java:26: error: ';' expected //
{
return lineNumber;
}
private void pascal(int[] row){ //Triangle.java:30: error: illegal start of expression
if(count >= lineNumber){
return;
}
num = new int[row.length + 1];
num[0] = 1;
for(int i = 1; i < row.length; i++){
num[i] = row[i - 1] + row[i];
}
num[row.length] = 1;
count ++;
pascal(num);
return;
}
public int[] output(){
count = 1;
num = new int[count];
num[0] = 1;
pascal(num);
return num;
}
public static void main(String[] args){
int i,userNum;
Scanner scnr = new Scanner(System.in);
System.out.println("Enter a number to get the nth line of"+
" Pascal's Triangle.");
userNum = input.nextInt();
PascalTriangle triangle = new Triangle(userNum);
int[] result = triangle.output();
System.out.println("\n Line " + triangle.get() + " of "
+ "Pascal's Triangle is ");
for(i = 0; i < result.length; i++){
System.out.println(result[i] + " ");
}
}
}
}
有什麼確切的錯誤,以添加結束}? – Carcigenicate
您對'set(int n)'方法缺少'}'。 – kentaro
您是否也可以發佈錯誤? – denis