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。
package a;
import java.util.*;
public class aa {
public static void main(String[] args) {
// TODO Auto-generated method stub;
int[] arr = new int[] { 10, 20, 30, 40, 50 };
for (int i = 0; i < arr.length; i++) {
System.out.print(arr[i] + " ");
}
}
}
2.编写一个简单程序,要求数组长度为5,动态赋值10,20,30,40,50,在控制台输出该数组的值。
package a;
import java.util.*;
public class aa {
public static void main(String[] args) {
// TODO Auto-generated method stub;
int[] a = new int[6];
for (int i = 1; i < a.length; i++) {
a[i]+=a[i-1]+10;
System.out.print(a[i] + " ");
}
}
}
3.编写一个简单程序,定义整型数组,里面的元素是{23,45,22,33,56},求数组元素的和、平均值
package a;
import java.util.*;
public class aa {
public static void main(String[] args) {
// TODO Auto-generated method stub;
int[] a = new int[]{23,45,22,33,56};
int sum=0,pj=0;
for (int i = 0; i < a.length; i++) {
sum+=a[i];
}
pj=sum/5;
System.out.println(sum + " " + pj);
}
}
4.在一个有8个整数(18,25,7,36,13,2,89,63)的数组中找出其中最大的数及其下标。
package a;
import java.util.*;
public class aa {
public static void main(String[] args) {
// TODO Auto-generated method stub;
int[] a = new int[] { 18, 25, 7, 36, 13, 2, 89, 63 };
int max = a[0];
for (int i = 0; i < a.length; i++) {
if (max < a[i]) {
max = a[i];
}
}
System.out.println("最大值是:" + max);
int count = 0;
for (int i = 0; i < a.length; i++) {
if (a[i] == max) {
System.out.println("下标值是:" + count);
}
count++;
}
}
}
5.有一个已经排好序的数组。现输入一个数,要求按原来的规律将它插入数组中。(知识点:数组遍历、数组元素访问)
package a;
import java.util.*;
public class aa {
public static void main(String[] args) {
// TODO Auto-generated method stub;
Scanner sc = new java.util.Scanner(System.in);
int myList[] = new int[20];
System.out.println("请输入多个正整数并以空格隔开(输入0表示结束)");
int c = 0;
do {
myList[c] = sc.nextInt();
c++;
} while (myList[c - 1] != 0);
System.out.println("输入的数组为:");
for (int i = 0; i < c - 1; i++) {
System.out.print(myList[i] + " ");
}
System.out.println();
System.out.println("输入的数组逆序输出为:");
for (int i = c - 2; i >= 0; i--) {
System.out.print(myList[i] + " ");
}
}
}
6.有一个已经排好序的数组。现输入一个数,要求按原来的规律将它插入数组中。(知识点:数组遍历、数组元素访问)
这题没想明白