第六周上机练习
1.
package test; public class LH { public static void main(String[] args) { int[] arr=new int[]{10,20,30,40,50}; for(int i=0;i<arr.length;i++){ System.out.print(arr[i]+" "); } } }
2.
package test; public class LH { public static void main(String[] args) { int a[]= new int[5]; a[0]=10; a[1]=20; a[2]=30; a[3]=40; a[4]=50; for(int i=0;i<a.length;i++) { System.out.println(a[i]); } } }
3.
package test; public class LH { public static void main(String[] args) { int a[]= {23,45,22,33,56}; double sum=0; for(int i=0;i<a.length;i++) { sum+=a[i]; } System.out.println("和"+sum+" 平均值"+sum/5); } }
4.
package test; public class LH { public static void main(String[] args) { Scanner input = new Scanner(System.in); int[] arr = {18,25,7,36,13,2,89,63}; int max =arr[0]; int index =0; for(int i =1;i<arr.length;i++) { if(max < arr[i]) { max = arr[i]; index=i; } } System.out.println("max="+max+" 下标"+index); } }
5.
package test; public class LH { public static void main(String[] args) { int num[] = new int[] { 1, 2, 3, 4, 5, 7 }; int num1[] = new int[num.length]; int index = 0; for (int i = num.length - 1; i >= 0; i --) { num1[index] = num[i]; index ++; } num = num1; for(int n:num){ System.out.println(n); } } }