JAVA编程语言基础第七章课后作业 - 好文

JAVA编程语言基础第七章课后作业 1输入五句话，逆序输出 package tz1; import java.util.Scanner; public
class dome24 { public static void main(String[] args) { Scanner input = new
Scanner(System.in); System.out.println("请输入5句话"); String [] word = new
String[5]; for (int i = 0; i < word.length; i++) {
System.out.print("第"+(i+1)+"句话"); word[i] = input.next(); }for (int J =
word.length-1;J>=0; J--) { System.out.println("逆序输入的是"+word[J]); } } }
2.找出最低分及在数组中的原始位置 package tz1; import java.util.Arrays; public class dome25 {
public static void main(String[] args) { int points[] = new int[] { 18, 25, 7,
36, 13, 2, 89, 63 }; int min = 0; int index = points.length; min = points[0];
for (int i = 0; i < points.length; i++) { if (min > points[i]) { min =
points[i]; index = i; } } System.out.println("最低积分是" + min);
System.out.println("最低积分的坐标是" + index); } } 3.输入10个整数判断 package tz1; import
java.util.Scanner; public class dome26 { public static void main(String[] args)
{ int num [] =new int[10]; int count[] = new int [4];
System.out.println("请输入10个数"); Scanner input = new Scanner(System.in); for (int
i = 0; i < 10; i++) { num[i] = input.nextInt(); switch (num[i]) { case 1:
count[0]++; break; case 2: count[1]++; break; case 3: count[2]++; break;
default: count[3]++; break; } }System.out.println("数字1的个数："+count[0]);
System.out.println("数字2的个数："+count[1]); System.out.println("数字3的个数："+count[2]);
System.out.println("数字4的个数："+count[3]); } } 4.在元数组加入新的数组并逆序输出 package tz1;
import java.util.Arrays; public class dome27 { public static void main(String[]
args) { System.out.println("原数组为"); int[] array = new int[] {1,3,-1,5,-2};
int[] array2= new int[5]; for (int i = 0; i < array.length; i++) {
System.out.print(array[i]); }System.out.println(" "); for (int i =
array2.length-1,j=0; i>=0; i--,j++) { if (!(array[i]<0)) { array2[j]=array[i];
}else { continue; } }System.out.println("逆序后的数组为："); for (int i = 0; i <
array2.length; i++) { System.out.print(array2[i]); } } } 5.英文歌曲 package tz1;
import java.util.Scanner; public class song { public static void main(String[]
args) { Scanner input = new Scanner(System.in); String[] music = new String[] {
"Island", "Ocean", "Pretty", "Sun" }; // 原数组 String[] newMusic = new String[5];
String name; System.out.print("插入前的数组为："); for (int i = 0; i < music.length;
i++) { System.out.print(music[i] + " "); } for (int i = 0; i < music.length;
i++) { newMusic[i] = music[i]; } System.out.print("\n请输入歌曲名称："); name =
input.nextLine(); int index = newMusic.length; for (int j = 0; j <
newMusic.length; j++) { if (newMusic[j].compareToIgnoreCase(name) > 0) { index
= j; break; } } for (int i = newMusic.length - 1; i > index; i--) { newMusic[i]
= newMusic[i - 1]; } newMusic[index] = name; System.out.print("插入后的数组为："); for
(int i = 0; i < newMusic.length; i++) { System.out.print(newMusic[i] + " "); }
} }

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