package com.homework7;
//1.编写一个简单程序，要求数组长度为5，
//静态赋值10，20，30，40，50，在控制台输出该数组的值。
public class Exe7_1_1 {
public static void main(String[] args) {
int m[] = {10,20,30,40,50};
for (int i : m) {
System.out.println(i);
}
}
}
package com.homework7;
//2.编写一个简单程序，要求数组长度为5，动态赋值，并在控制台输出该数组的值。
import java.util.Scanner;
public class Exe7_1_2 {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int []m = new int[5];
System.out.println("请输入5个数");
for (int i = 0; i < m.length; i++) {
m[i] = input.nextInt();
}
for (int i = 0; i < m.length; i++) {
System.out.println(m[i]);
}
}
}
package com.homework7;
//3.定义字符型数组，分别存储c、h、 i、n、a 并在控制台输出
public class Exe7_1_3 {
public static void main(String[] args) {
char m[] = {'c','h','i','n','a'};
for (char c : m) {
System.out.print(c + "\t");
}
}
}
package com.homework7;
//4.输入5个学生成绩，求总分和平均分
import java.util.Scanner;
public class Exe7_1_4 {
public static void main(String[] args) {
Scanner input =new Scanner(System.in);
double sum = 0;
double []m =new double[5];
for (int i = 0; i < m.length; ) {
System.out.print("请输入第"+(i+1)+"个学生成绩:");
m[i] =input.nextDouble();
if(0>m[i] || m[i]>100){
System.out.println("输入不合法，请重新输入!");
continue;
}else{
sum += m[i];
i++;
}
}
System.out.println("总分是:"+sum);
System.out.println("平均分是:"+sum/5);
}
}
package com.homework7;
//5.定义数组{12,53,23,44,53} 用for和foreach分别输出，再倒序输出
public class Exe7_1_5 {
public static void main(String[] args) {
int m[] ={12,53,23,44,53};
System.out.print("for输出:\t");
for (int i = 0; i < m.length; i++) {
System.out.print(m[i] + "\t");
}
System.out.println();
System.out.print("foreach输出:");
for (int i : m) {
System.out.print(i + "\t");
}
System.out.println();
System.out.print("倒序输出:\t");
for (int i = m.length-1; i >=0 ; i--) {
System.out.print(m[i] + "\t");
}
}
}
package com.homework7;
//1.定义一个整型数组，赋值(动态静态都可以)后求出奇数个数和偶数个数
import java.util.Scanner;
public class Exe7_2_1 {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int jisum =0;
int ousum =0;
int []m = new int[10];
System.out.println("请输入10个整数,判断奇偶个数:");
for (int i = 0; i < m.length; i++) {
m[i] = input.nextInt();
if (m[i] == 0) {
} else if(m[i] %2==0) {
ousum ++;
}else{
jisum ++;
}
}
System.out.println("奇数有" + jisum + "个!");
System.out.println("偶数有" + ousum + "个!");
}
}
package com.homework7;
//2.生成一个100长度数组，里面的数分别是1-100，并输出
public class Exe7_2_2 {
public static void main(String[] args) {
int []m =new int[100];
for (int i = 0; i < 100; i++) {
m[i] =i+1;
}
for (int i : m) {
System.out.print(i +" ");
if(i%10==0)
System.out.println();
}
}
}
package com.homework7;
//3.定义一个double数组，存放10个学生的成绩，给所有同学加5分，不能超过100分。
import java.util.Scanner;
public class Exe7_2_3 {
public static void main(String[] args) {
Scanner input =new Scanner(System.in);
double []m =new double[10];
for (int i = 0; i < m.length; ) {
System.out.print("请输入第"+(i+1)+"个学生成绩:");
m[i] =input.nextDouble();
if(0>m[i] || m[i]>100){
System.out.println("输入不合法，请重新输入!");
continue;
}
m[i] +=5;
if(m[i]>100)
m[i]=100;
i++;
}
for (double d : m) {
System.out.println(d);
}
}
}
