java二維數組定義初始化-楊輝三角
阿新 • • 發佈:2018-02-03
args pan string 數組定義 static highlight pri 位數 --
public class Array2Demo2_3 { public static void main(String[] args) { //定義初始化 int[][] arr = new int[3][];//定義高維數組 arr[0] = new int[2];//高位數組下定義低維數組 arr[1] = new int[3]; arr[2] = new int[4]; arr[0][0] = 1;//給低維數組初始化 arr[0][1] = 2; arr[1][0] = 1; arr[1][1] = 2; arr[1][2] = 3; arr[2][0] = 1; arr[2][1] = 2; arr[2][2] = 3; arr[2][3] = 4; for(int i = 0;i<arr.length;i++) { for(int j = 0;j<arr[i].length;j++) { System.out.print(arr[i][j]); } System.out.println(); } //-------------------------楊輝三角----------------------------int row = 8; int[][] arr1 = new int[row][row]; for(int i = 0;i<row;i++) { for(int j = 0;j<=i;j++) { if(j == 0||j == i) { arr1[i][j] =1; }else { arr1[i][j] = arr1[i-1][j-1]+arr1[i-1][j]; } } } for(int i = 0;i<row;i++) { for(int j = 0;j<=i;j++) { System.out.print(arr1[i][j]+" "); } System.out.println(); } } }
java二維數組定義初始化-楊輝三角