这段代码有什么问题? 它似乎没有打印出任何东西
public void RTriangle(char appearance, int size)
{
for (int i = 0; i < size; i++)
{
for (int j = 0; j < i; j++)
{
System.out.println(appearance);
}
System.out.println();
}
System.out.println();
}
答案 0 :(得分:1)
public void print(final char appearance, final int size){
for (int i = 1; i <= size; i++) {
for (int j = size - i; j >0; j--)
System.out.print(" ");
for (int k = i; k > 0; k--)
System.out.print(appearance);
System.out.println();
}
}
这应该按照指示进行。如果你想让我解释这个逻辑,请告诉我。
答案 1 :(得分:0)
我认为你的指数必须正确。例如:
for (int i = 0 ; i < size ; i++) { // count of rows
for (int j = 0 ; j < size ; j++)
System.out.print ((i < j) ? " " : appearance);
System.out.println();
}
答案 2 :(得分:0)
public void RTriangle(char appearance, int size)
{
for(int i=0;i<size;i++)
{
for(int j=0;j<size;j++)
{
if((size-j)<i) // the amount of * depents on i and it goes from the right to the left so use size -j
System.out.print(""+appearance); //""+ turns the char into a string
}
System.out.println(); //append a line when your first line is done
}
}