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View Full Version : removing repetition in result



codefreaq
04-18-2008, 04:24 AM
this is the code of a program which takes upto 20 numbers and puts them in an array. (the sentinel value is -1). then the program calculates if any of the values was repeated and stores that value in another array.in the end it is supposed to print the results in this form
example for input 1,2,3,3,4:
Value Count
1 1
2 1
3 2
4 1

but the output I get is

Value Count
1 1
2 1
3 2
3 2
4 1


I need help adding to the code so that if a value has count more then 1 it should be printed only once.

here is the code :

**************************************************************************************************** ***************************************

import java.util.Scanner;

public class Value
{
public static void main(String [] args)

{

/* declaring variables */
int [] userNumbers = new int [20];
int i=0;
int m=0;
int h=0;
int j,k,z,d;
int breakNumber = 0;
int [] count = new int [20];


/* initializing all elements to -1 */

userNumbers[0] = -1;
userNumbers[1] = -1;
userNumbers[2] = -1;
userNumbers[3] = -1;
userNumbers[4] = -1;
userNumbers[5] = -1;
userNumbers[6] = -1;
userNumbers[7] = -1;
userNumbers[8] = -1;
userNumbers[9] = -1;
userNumbers[10] = -1;
userNumbers[11] = -1;
userNumbers[12] = -1;
userNumbers[13] = -1;
userNumbers[14] = -1;
userNumbers[15] = -1;
userNumbers[16] = -1;
userNumbers[17] = -1;
userNumbers[18] = -1;
userNumbers[19] = -1;



/* inputting values in the array */
Scanner scan = new Scanner(System.in);

System.out.println("Enter some numbers ranging in vlaue from 0 to 10 ; upto 20 number separated by space(after your last number enter -1)");




for(breakNumber=0 ; breakNumber != -1 ;breakNumber = scan.nextInt())

{


userNumbers[i]= breakNumber;
i++;



}


/*calculating count of each value */

z=userNumbers.length;

for(j=0;j<z;j++)
{
for(k=0;k<z;k++)
{
if (userNumbers[k]==userNumbers[j])
{
count[j] += 1 ;
}

}
}


/*printing results */


System.out.println("Value Count \n" );
for(d=0;d<z;d++)
{

if(userNumbers[d]>0 && count[d]<2 )

{
System.out.println(userNumbers[d] + " " + count[d]);
}
}






}}

**************************************************************************************************** *********************

HELP :confused:

mjlorbet
04-18-2008, 05:13 AM
sir, i've isolated your problem. you must wrap your code inside tags or you'll get few responses ;)

first, initialize your variables like this


for(int tmp1 = 0; tmp1 < 20; tmp1++)
userNumbers[tmp1] = -1;


next


int[] uniqueNums = new int[20];
int[] uniqueCount = new int[20];
int nUniques = 0;
for(int zz = 0; ((zz < 20) && (userNumbers[zz] != -1)); zz++){
int foundat = -1;
for(int zzz = 0; zzz < nUniques; zzz++)
foundat = (foundat==-1)?(uniqueNums[zzz] == userNumbers[zz])?zzz:foundat:foundat;
if(foundat == -1){
uniqueNums[nUniques] = userNumbers[zz];
uniqueCount[nUniques] = 1;
nUniques++;
}
else
uniqueCount[foundat]++;
}


the unique numbers (unsorted mind you, make certain you sort both elements in the pair if sorting is necessary) are stored in uniqueNums and the count of each item is stored in uniqueCount.

codefreaq
04-20-2008, 01:06 AM
Thanks mjlorbet I dont get it right away I ll have to meditate on it a bit lol



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