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  1. import java.util.Scanner;
  2.  
  3. public class Main {
  4.     public static int[] getArray(final int n) {
  5.         int[] arr = new int[n];
  6.         for (int i = 0; i < n; i++) {
  7.             arr[i] = (int)(Math.random() * 500) + 1;
  8.         }
  9.         return arr;
  10.     }
  11.     public static void printArray(final int[] arr) {
  12.         System.out.println("Array on one line: ");
  13.         for (int i = 0; i < arr.length; i++) {
  14.             System.out.print(arr[i] + " ");
  15.         }
  16.     }
  17.     public static void getMax(final int[] arr) {
  18.         int max = arr[0];
  19.         for (int i = 1; i < arr.length; i++) {
  20.             if (arr[i] > max) {
  21.                 max = arr[i];
  22.             }
  23.         }
  24.         System.out.println();
  25.         System.out.println("Maximum: " + max);
  26.     }
  27.     public static void getMin(final int[] arr) {
  28.         int min = arr[0];
  29.         for (int i = 1; i < arr.length; i++) {
  30.             if (arr[i] < min) {
  31.                 min = arr[i];
  32.             }
  33.         }
  34.         System.out.println("Minimum: " + min);
  35.     }
  36.     public static void getAverage(final int[] arr) {
  37.         double x = 0;
  38.         double y;
  39.         for (int i = 0; i < arr.length; i++) {
  40.             x = arr[i] + x;
  41.         }
  42.         y = x / arr.length;
  43.         System.out.println("Average: " + y);
  44.     }
  45.     public static void sumValues(final int[] arr) {
  46.         int sum = 0;
  47.         for (int num: arr) {
  48.             sum = sum + num;
  49.         }
  50.         System.out.println("Sum: " + sum);
  51.     }
  52.     public static void greaterThanAverage(final int[] arr) {
  53.         double average = 0;
  54.         for(int num: arr){
  55.             average += num;
  56.         }
  57.         average /= arr.length;
  58.         int count = 0;
  59.         for (int i = 0; i < arr.length; i++) {
  60.             if(arr[i] > average){
  61.                 ++count;
  62.             }
  63.         }
  64.         System.out.println("Number of integers greater than average: " + count);
  65.     }
  66.     public static void countInc(final int[] arr) {
  67.         int count2 = 0;
  68.         for (int i = 0; i < arr.length - 1; i++) {
  69.             if (arr[i] < arr[i + 1]) {
  70.                 count2++;
  71.             }
  72.         }
  73.         System.out.println("Number of times subsequent value increases: " + count2);
  74.     }
  75.     public static void countDec(final int[] arr) {
  76.         int count3 = 0;
  77.         for (int i = 0; i < arr.length - 1; i++) {
  78.             if (arr[i] > arr[i + 1]) {
  79.                 count3++;
  80.             }
  81.         }
  82.         System.out.println("Number of times  subsequent value decreases: " + count3);
  83.     }
  84.     public static void printArray3PerLn(final int[] arr) {
  85.         System.out.println("Array with 3 elements per line: ");
  86.         for (int i = 0; i < arr.length; i++) {
  87.             System.out.print(arr[i] + " ");
  88.             if (i % 3 == 2) {
  89.                 System.out.println();
  90.             }
  91.         }
  92.     }
  93.     public static void main(String[] args) {
  94.         Scanner kbd = new Scanner(System.in);
  95.         int sum = 0;
  96.         int n;
  97.         do {
  98.             System.out.print("Enter integer n, greater than 0: ");
  99.             n = kbd.nextInt();
  100.         } while (n < 1);
  101.         System.out.println();
  102.         final int[] arr = getArray(n);
  103.         printArray(arr);
  104.  
  105.         getMax(arr);
  106.  
  107.         getMin(arr);
  108.  
  109.         sumValues(arr);
  110.  
  111.         getAverage(arr);
  112.  
  113.         greaterThanAverage(arr);
  114.  
  115.         countInc(arr);
  116.  
  117.         countDec(arr);
  118.  
  119.         printArray3PerLn(arr);
  120.     }
  121. }
Success #stdin #stdout 0.14s 38084KB
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stdout
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Enter integer n, greater than 0: 
Array on one line: 
480 488 442 310 420 476 399 419 138 302 
Maximum: 488
Minimum: 138
Sum: 3874
Average: 387.4
Number of integers greater than average: 7
Number of times subsequent value increases: 5
Number of times  subsequent value decreases: 4
Array with 3 elements per line: 
480 488 442 
310 420 476 
399 419 138 
302
https://ideone.com/ycZbNX
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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