Question 10 in the excercise after video 2
first of all try to sort the array. you can different algorithm for them like bubble sort, quick sort etc. after that is done make a program that takes in array and counts each recurrence and then print the results.
I tried sorting the array using the following code : import java.util.Arrays; public class Excercise() { public static void main(){ int [] h={1,3,4,5,6,3,2,4,6,7,9,4,12,3,4,6,8,9,7,6,43,2,4,7,7,5,2,1,3,4,6,3,1,1,1}; int [] y=h; Arrays.sort(y); int c=0; for(int i=0;i<y.length;i++){ for(int j=0;j<y.length;j++){ if(h[i]==y[j]){ c++; } } System.out.println(y[i]+"Repeated"+c+"times"); c=0; } } } But now it is printing the following : 1Repeated5times 1Repeated5times 1Repeated5times 1Repeated5times 1Repeated5times 2Repeated3times 2Repeated3times 2Repeated3times 3Repeated5times 3Repeated5times 3Repeated5times 3Repeated5times 3Repeated5times 4Repeated6times 4Repeated6times 4Repeated6times 4Repeated6times 4Repeated6times 4Repeated6times 5Repeated2times 5Repeated2times 6Repeated5times 6Repeated5times 6Repeated5times 6Repeated5times 6Repeated5times 7Repeated4times 7Repeated4times 7Repeated4times 7Repeated4times 8Repeated1times 9Repeated2times 9Repeated2times 12Repeated1times 43Repeated1times I think as per the question it should print only once e.g ."7Repeated4times" only once. Please suggest
Hi Ashish, I have tried with the following code public class Module2_Exer9 { public static void main(String[] args) { // TODO Auto-generated method stub int [] x = {1,3,4,5,6,3,2,4,6,7,9,4,12,3,4,6,8,9,7,6,43,2,4,7,7,5,2,1,3,4,6,311,1}; for ( int i=0; i<x.length; i++) { int count = 0; for (int j= 0; j<x.length; j++) { if(x[i] == x[j]) { count = count+1; } } System.out.println("Value repeated"+ x[i] + " is " + count ); } } } Getting the output as Value repeated1 is 3 Value repeated3 is 4 Value repeated4 is 6 Value repeated5 is 2 Value repeated6 is 5 Value repeated3 is 4 Value repeated2 is 3 Value repeated4 is 6 Value repeated6 is 5 Value repeated7 is 4 Value repeated9 is 2 Value repeated4 is 6 Value repeated12 is 1 Value repeated3 is 4 Value repeated4 is 6 Value repeated6 is 5 Value repeated8 is 1 Value repeated9 is 2 Value repeated7 is 4 Value repeated6 is 5 Value repeated43 is 1 Value repeated2 is 3 Value repeated4 is 6 Value repeated7 is 4 Value repeated7 is 4 Value repeated5 is 2 Value repeated2 is 3 Value repeated1 is 3 Value repeated3 is 4 Value repeated4 is 6 Value repeated6 is 5 Value repeated311 is 1 Value repeated1 is 3 Also I have tried with sorting the array but still could not get the correct method could you please suggest. Thanks, Chakradhar
Your code has very basic mistakes I have mailed you solution as well You need to sort it
10) Suppose there is an integer array holding following elements: 1,3,4,5,6,3,2,4,6,7,9,4,12,3,4,6,8,9,7,6,43,2,4,7,7,5,2,1,3,4,6,311,1 Write a program which prints which each number from array and the times it has been repeated in array Fox eg 1- Repeated 3 times 4- Repeated 6 times My code is not identifying the unique numbers. Please help public class ExerciseModule2_10 { public static void main(String[] args) { // TODO Auto-generated method stub int array[] = {1,3,4,5,6,3,2,4,6,7,9,4,12,3,4,6,8,9,7,6,43,2,4,7,7,5,2,1,3,4,6,311,1}; int a = array.length; int n=0; System.out.println("Length of array is "+a); int temp; for (int i = 0; i < a; i++) { for (int j = i + 1; j < a; j++) { if (array[i] > array[j]) { temp = array[i]; array[i] = array[j]; array[j] = temp; } } } for(int i=0;i<a;i++){ n=0; for(int j =0;j<a;j++){ if(array[i]==array[j]){ n=n+1; } } System.out.println("Number of " +array[i]+ " is " +n); } } }
package com.soapuitutorial.propertie; public class ArrayCount { public static void main(String[] args) { int[] x = { 1, 3, 4, 5, 6, 3, 2, 4, 6, 7, 9, 4, 12, 3, 4, 6, 8, 9, 7, 6, 4, 3, 2, 4, 7, 7, 5, 2, 1, 3, 4, 6, 3, 1, 1 }; int count = -1; int biggestNumber = 0; for (int i = 1; i < x.length; i++) { if (x[i] > biggestNumber) biggestNumber = x[i]; } // System.out.print(x[i]+","); for (int i = 0; i <= biggestNumber; i++) { for (int j = 0; j <= x.length - 1; j++) { if (x[j] == i) { count++; // System.out.println(x[i] + " " + i+" "+count); } } if (count < 0) { } else { System.out.println(i + "- Repeated " + count + " times"); } count = -1; } } }
Hi This is my code. public class RepeatNo_Array { public static void main(String[] args) { int x[]={1,3,4,5,6,3,2,4,6,7,9,4,12,3,4,6,8,9,7,6,43,2,4,7,7,5,2,1,3,4,6,311,1 }; int y=x.length; for(int i=0;i<y;i++){ int count=0; for(int j=i+1;j<y;j++){ if(x[i]==x[j]){ count=count+1; System.out.println("integer" + x[i]+ "repeated" +count+ "times"); } } } } OUTPUT is integer1repeated1times integer1repeated2times integer3repeated1times integer3repeated2times integer3repeated3times integer4repeated1times integer4repeated2times integer4repeated3times integer4repeated4times integer4repeated5times integer5repeated1times integer6repeated1times integer6repeated2times integer6repeated3times integer6repeated4times integer3repeated1times integer3repeated2times integer2repeated1times integer2repeated2times integer4repeated1times integer4repeated2times integer4repeated3times integer4repeated4times integer6repeated1times integer6repeated2times integer6repeated3times integer7repeated1times integer7repeated2times integer7repeated3times integer9repeated1times integer4repeated1times integer4repeated2times integer4repeated3times integer3repeated1times integer4repeated1times integer4repeated2times integer6repeated1times integer6repeated2times integer7repeated1times integer7repeated2times integer6repeated1times integer2repeated1times integer4repeated1times integer7repeated1times integer1repeated1times Plz help me where i went wrong. Regards Sukanya
use debuging feature in your eclipse to learn how this code works. [code:r00skcoo]package com.soapuitutorial.propertie; public class ArrayCount { public static void main(String[] args) { int[] x = { 1, 3, 4, 5, 6, 3, 2, 4, 6, 7, 9, 4, 12, 3, 4, 6, 8, 9, 7, 6, 4, 3, 2, 4, 7, 7, 5, 2, 1, 3, 4, 6, 3, 1, 1 }; int count = -1; int biggestNumber = 0; for (int i = 1; i < x.length; i++) { if (x[i] > biggestNumber) biggestNumber = x[i]; } // System.out.print(x[i]+","); for (int i = 0; i <= biggestNumber; i++) { for (int j = 0; j <= x.length - 1; j++) { if (x[j] == i) { count++; // System.out.println(x[i] + " " + i+" "+count); } } if (count < 0) { } else { System.out.println(i + "- Repeated " + count + " times"); } count = -1; } } }[/code:r00skcoo]
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