标签:style blog color ar os sp java for strong
简单的数组、二位数组
1 package com.lovo; 2 3 import java.util.Scanner; 4 5 /** 6 * 二维数组 7 * 8 * @author 王启文 9 * 10 */ 11 12 public class D2 { 13 public static void main(String[] args) { 14 Scanner sc = new Scanner(System.in); 15 16 String[] names = { "赵大", "钱二", "孙三", "李四", "周五" }; 17 String[] course = { "语文", "数学", "英语" }; 18 double[][] scores = new double[5][3]; 19 20 for (int i = 0; i < scores.length; ++i) { 21 System.out.println("请输入" + names[i] + "的成绩:"); 22 for (int j = 0; j < scores[i].length; ++j) { 23 System.out.print("\t" + course[j] + ":"); 24 scores[i][j] = sc.nextDouble(); 25 } 26 } 27 28 double ChSum = 0; 29 double MaSum = 0; 30 double EnSum = 0; 31 32 for (int i = 0; i < scores.length; ++i) { 33 double sum = 0; 34 for (int j = 0; j < scores[i].length; ++j) { 35 sum += scores[i][j]; 36 if (j == 0) { 37 ChSum += scores[i][j]; 38 } 39 if (j == 1) { 40 MaSum += scores[i][j]; 41 } 42 if (j == 2) { 43 EnSum += scores[i][j]; 44 } 45 } 46 System.out.printf("%s的平均分为:%.2f\n", names[i], sum 47 / scores[i].length); 48 } 49 50 System.out.printf("语文的平均分为:%.2f\n", ChSum / names.length); 51 System.out.printf("数学的平均分为:%.2f\n", MaSum / names.length); 52 System.out.printf("英语的平均分为:%.2f\n", EnSum / names.length); 53 54 sc.close(); 55 } 56 }
杨辉三角
1 package com.lovo; 2 3 /** 4 * 杨辉三角 5 * 6 * @author 王启文 7 * 8 */ 9 public class D3 { 10 public static void main(String[] args) { 11 int[][] h = new int[10][]; 12 13 for (int i = 0; i < h.length; ++i) { 14 h[i] = new int[i + 1]; 15 for (int j = 0; j < h[i].length; ++j) { 16 if (j == 0 || j == i) { 17 h[i][j] = 0; 18 } else { 19 h[i][j] = h[i - 1][j] + h[i - 1][j - 1]; 20 } 21 System.out.print(h[i][j] + "\t"); 22 } 23 System.out.println(); 24 } 25 } 26 }
标签:style blog color ar os sp java for strong
原文地址:http://www.cnblogs.com/Wqwwd/p/4100259.html