The App2

readFiles.java

import java.util.*;
import java.io.*;
public class readFiles{
	
	public static void main(String[] args) throws IOException{
		Scanner input = new Scanner(System.in);
		
		int a = input.nextInt();
		int b = input.nextInt();
		int[][] array = new int[a][b];
		
		
		try {
			Scanner file = new Scanner(new File("data.txt"));
			for(int i = 0; i < array.length; i++){
				for(int x = 0; x < array[0].length; x++){
						array[i][x] = file.nextInt();
				}
			}
		} catch (FileNotFoundException e) {
			System.err.println("Some exception happened: " + e.getMessage());
		}
	
		
		maxValue(array);
		minValue(array);
		sum(array);
		
		int[] anArray = newArray(array);
		mostfreq(anArray);
		leastfreq(anArray);
 
	}
		public static void sum(int[][] array){
			int sum = 0;
			for(int i = 0; i < array.length; i++){
				for(int x = 0; x < array[0].length; x++){
					sum = sum +	array[i][x];
				}
			}
			System.out.println(sum);
			double average = sum/(array[0].length * array.length);
			System.out.println(average);
		}
			public static void maxValue(int[][] array){
				int max = array[0][0];
				for(int i = 0; i < array.length; i++){
					for(int x = 0; x < array[0].length; x++){
						if(array[i][x] > max){
							max = array[i][x];
						}
					}
				}
				System.out.println(max);
			}
				public static void minValue(int[][] array){
					int min = array[0][0];
					for(int i = 0; i < array.length; i++){
						for(int x = 0; x < array[0].length; x++){
							if(array[i][x] < min){
								min = array[i][x];
							}
						}
					}
					System.out.println(min);
				}
		
					public static int[] newArray(int [][] array){
						int size = array[0].length * array.length;
						int[] anArray = new int[size];
						int count = 0;
						while(count < size){
							for(int i = 0; i < array.length; i++){
								for(int x = 0; x < array[0].length; x++){
									anArray[count] = array[i][x];
									count++;
								}
							}
						}
						boolean flag = true;
						int temporal;
						while (flag){
							flag = false;
							for (int j = 0; j < anArray.length - 1; j++) {
								if (anArray[j] > anArray[j + 1]) {
									temporal = anArray[j];
									anArray[j] = anArray[j + 1];
									anArray [j + 1] = temporal;
									flag = true;
								}
							}
						}
						return anArray;
					}
						public static void mostfreq(int[] anArray){
							int count = 1, tempCount;
							int freq = anArray[0];
							int temp = 0;
							for(int i = 0; i < anArray.length-1; i++){
								tempCount = 0;
								for(int j = 1; j < anArray.length; j++){
									if(anArray[i] == anArray[j]){
										tempCount++;
									}
								}
								if(tempCount > count){
									count = tempCount;
									freq = anArray[i];
								}
							}
							System.out.println(freq);
						}
							public static void leastfreq(int[] anArray){
								int count = 100, tempCount;
								int least = anArray[0];
								int temp = 0;
								for(int i = 0; i < anArray.length-1; i++){
									tempCount = 0;
									for(int j = 1; j < anArray.length; j++){
										if(anArray[i] == anArray[j]){
											tempCount++;
										}
									}
									if(tempCount < count){
										count = tempCount;
										least = anArray[i];
									}
								}
								System.out.println(least);
							}
}