Question

好给一个n值用java中数组的方式编写出金字塔

rt

Answer 1

public class JavaTest {

int[][] getArray(int n){
int[][] array = new int[n][2*n-1];
for(int i=1;i<=n;i++){
for(int j=1;j<=(2*n-1);j++){
if(j>(n-i) && j<(n+i))
array[i-1][j-1]=1;
else
array[i-1][j-1]=0;
}
}
return array;
}

void printArray(int n){
int[][] array = getArray(n);
for(int i=0;i<array.length;i++){
for(int j=0;j<array[i].length;j++){
if(array[i][j]==1)
System.out.print("*");
else
System.out.print(" ");
}
System.out.print("\n");
}
}

public static void main(String[] args){
int n = 5;
new JavaTest().printArray(n);
}
}

Answer 2

public class D {
public static void main(String[] args) {
int size = 5;
for (int i = 0; i < size; i++) {
for (int x = 1; x <= size - i; x++) {
System.out.print(" ");
}
for (int j = 1; j <= i * 2 + 1; j++) {
System.out.print("*");
}
System.out.println();
}

}
}

追问

size是什么意思!!

追答

size就相当于你输入的N