I have got an array counter[7]
and it's always fulfilled with random bits (so 1 and 0 bits/values). Also I have got an other array error_sum[7]
where I want to move only the wrong values (previously searched by another algorithm) from counter[7]
.
The problem is, I don't know how to fill error_sum[7]
using a for
loop until these wrong values are over.
Example (pseudo code):
counter[7] = {1,0,0,1,1,0,1};
Let's say the wrong bits are {1,0, , ,1,0,1}, so only 5 (wrong) bits I want to move to the error_sum[7]
array, to have them there like this:
error_sum[7] = {1,0,1,0,1,NULL,NULL}
so only the wrong bits from counter[7]
are moved to error_sum[7]
.
I know how to move just wrong bits, but I don't know how to do it until there are no more wrong bits. I am doing it with one for
loop with if
(choosing only wrong bits), so I've got the wrong bits mixed with only zeros or only one-s (bits) don't know why.
////sumowanie par, które są błędne////
int [] error_sum = new int [7];
System.out.println("\n");
for (int i=0; i<7; i++)
{
if (error[i]=="błąd")
{
System.out.println(counter[i]+" "+error[i]);
for (int j=0; j<7; j++)
{
error_sum[j]=counter[i];
if (_WHAT CODE INSERT HERE TO BREAK THE LOOP WHEN THERE ARE NO MORE WRONG BITS IN COUNTER[7]??_) break;
}
}
Whole my code:
package teleinformatykalab2;
import java.util.Arrays;
import java.util.List;
import java.util.Random;
import java.util.stream.Collectors;
public class TeleinformatykaLab2 {
//Funkcja wypełniająca tablicę ciągiem losowych bitów 0 lub 1 //
static boolean[] bity;
public static void Losowanie(int tab[]){
////int [] tab = new int[110];
for (int i = 0; i<110; i++)
{
Random r = new Random();
tab[i] = r.nextInt(2);
if (i%25==0)
{
System.out.println("");
}
System.out.print(tab[i]+"("+i+")"+", ");
}
System.out.println("");
}
/////////////////
//Funkcja wyświetla bity, których indeks w tablicy jest wartością kolejnej potęgi liczby dwa//
public static void zamienBity(int tab[], int tabBit[])
{
////System.out.println("\n"+tab[0]+tab[109]+"\n");
//int [] power = new int [7];
bity = new boolean[7];
for (int i=0; i<110; i++)
{
if (isPowerOfTwo(i))
{
int j = 0;
bity[j] = isPowerOfTwo(i);
j++;
System.out.print(tab[i]+"("+i+")"+", ");
}
if (i%50==0)
{
System.out.println("");
}
}
System.out.println("\n");
}
//Sprawdzenie ciągu kodem Hamminga//
public static void sprawdzHamming(int tab[], int tabBit[])
{
// przypisanie do tabBit bitow o indeksie potęgi dwa
int [] power = new int [7];
for(int i=0;i<tabBit.length;i++)
{
tabBit[i] = tab[(int)Math.pow(2,i)];
System.out.print(tabBit[i]+", ");
}
System.out.println("////\n");
//sprawdzenie pierwszej pary bitów
System.out.println("\nPierwsza para");
int [] skip = {1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,36,39,41,43,45,47,49,
51,53,55,57,59,61,63,65,67,69,71,73,75,77,79,81,83,85,87,89,91,93,95,97,99,
101,103,105,107,109};
for (int i : skip)
{
System.out.print(tab[i] + "("+i+")"+",");
if (i%25==0)
{
System.out.println("");
}
}
System.out.println("");
//sprawdzenie drugiej pary bitów
System.out.println("\nDruga para");
int skip2 []= {3,6,7,10,11,14,15,18,19,22,23,26,27,30,31,34,35,38,39,42,43,46,47,
50,51,54,55,58,59,62,63,66,67,70,71,74,75,78,79,82,83,86,87,90,91,94,95,98,99,102,103,106,107};
for (int j : skip2)
{
System.out.print(tab[j] + "("+j+")"+",");
if (j%25==0)
{
System.out.println("");
}
}
System.out.println();
//sprawdzenie trzeciej pary bitów
System.out.println("\nTrzecia para");
int skip3 []= {5,6,7, 12,13,14,15, 20,21,22,23, 28,29,30,31, 36,37,38,39, 44,45,46,47,
52,53,54,55, 60,61,62,63, 68,69,70,71, 76,77,78,79, 84,85,86,87, 92,93,94,95, 100,101,102,103, 108,109};
for (int k : skip3)
{
System.out.print(tab[k] + "("+k+")"+",");
if (k%18==0)
{
System.out.println("");
}
}
System.out.println();
//sprawdzenie czwartej pary bitów
System.out.println("\nCzwarta para");
int skip4 []= {9,10,11,12,13,14,15,16, 25,26,27,28,29,30,31,32, 41,42,43,44,45,46,47,48,
57,58,59,60,61,62,63,64, 73,74,75,76,77,78,79,80, 89,90,91,92,93,94,95,96,
105,106,107,108,109};
for (int l : skip4)
{
System.out.print(tab[l] + "("+l+")"+",");
if (l%8==0)
{
System.out.println("");
}
}
System.out.println();
//sprawdzenie piątej pary bitów
System.out.println("\nPiąta para");
for (int m=17; m<110; m++)
{
if ((m>=32 && m<=47) && (m>=64 && m<=79) && (m>=96 && m<=111)) continue;
System.out.print(tab[m] + "("+m+")"+",");
if (m%16==0)
{
System.out.println("");
}
}
System.out.println();
//sprawdzenie szóśtej pary bitów
System.out.println("\nSzóśta para");
for (int m=33; m<110; m++)
{
if (m>=65 && m<=96)/* && (m>=64 && m<=79) && (m>=96 && m<=111))*/ continue;
System.out.print(tab[m] + "("+m+")"+",");
if (m%16==0)
{
System.out.println("");
}
}
System.out.println();
//sprawdzenie siódmej pary bitów
System.out.println("\nSiódma para");
int [] sixtyfour = new int [120];
for (int m=65; m<110; m++)
{
//if (m>=65 && m<=96)/* && (m>=64 && m<=79) && (m>=96 && m<=111))*/ continue;
System.out.print(tab[m] + "("+m+")"+",");
if (m%16==0)
{
System.out.println("");
}
}
System.out.println("\n");
////Tablica liczników par bitów//
int [] counter = new int [7];
////Tablica wyświetlanych błędów//
String [] error = new String [7];
//////////Liczniki bitów jedynkowych////
int licznik1=0;
for (int a=1; a<110;a++)
{
if (tab[a]==1)
licznik1++;
}
int l1;
String spr;
if (licznik1%2==1) l1=1; else l1=0;
if (l1==tabBit[0]) error [0] = "ok";//spr="ok";
else error [0]="błąd";
counter [0] = l1;
System.out.println("W grupie 1: "+licznik1+"("+tabBit[0]+")" + " >"+counter[0]+" "+error[0]);
int licznik2=0;
for (int b=3; b<108;b++)
{
if (tab[b]==1)
licznik2++;
}
int l2;
if (licznik2%2==1) l2=1; else l2=0;
if (l2==tabBit[1]) error [1]="ok";
else error [1]="błąd";
counter [1] = l2;
System.out.println("W grupie 2: "+licznik2 +"("+tabBit[1]+")"+" >"+counter [1]+" "+error[1]);
int licznik3=0;
for (int c=5; c<109;c++)
{
if (tab[c]==1)
licznik3++;
}
int l3;
if (licznik3%2==1) l3=1; else l3=0;
if (l3==tabBit[2]) error[2]="ok";
else error[2]="błąd";
counter [2] = l3;
System.out.println("W grupie 3: "+licznik3 +"("+tabBit[2]+")"+ " >"+counter[2]+" "+error[2]);
int licznik4=0;
for (int d=9; d<109;d++)
{
if (tab[d]==1)
licznik4++;
}
int l4;
if (licznik4%2==1) l4=1; else l4=0;
if (l4==tabBit[3]) error[3]="ok";
else error[3]="błąd";
counter[3]=l4;
System.out.println("W grupie 4: "+licznik4 +"("+tabBit[3]+")"+ " >"+counter[3]+" "+error[3]);
//if (l4==tabBit[3]) System.out.print(" ok");
int licznik5=0;
for (int e=17; e<110;e++)
{
if (tab[e]==1)
licznik5++;
}
int l5;
if (licznik5%2==1) l5=1; else l5=0;
if (l5==tabBit[4]) error[4]="ok";
else error[4]="błąd";
counter[4] = l5;
System.out.println("W grupie 5: "+licznik5 + "("+tabBit[4]+")"+" >"+counter[4]+" "+error[4]);
int licznik6=0;
for (int f=33; f<110;f++)
{
if (tab[f]==1)
licznik6++;
}
int l6;
if (licznik6%2==1) l6=1; else l6=0;
if (l6==tabBit[5]) error[5]="ok";
else error[5]="błąd";
counter [5] = l6;
System.out.println("W grupie 6: "+licznik6+"("+tabBit[5]+")"+" >"+counter[5]+" "+error[5]);
int licznik7=0;
for (int g=65;g<110; g++)
{
if (tab[g]==1)
licznik7++;
}
int l7;
if (licznik7%2==1) l7=1; else l7=0;
if (l7==tabBit[6]) error[6]="ok";
else error[6]="błąd";
counter [6] = l7;
System.out.println("W grupie 7: "+licznik7+"("+tabBit[6]+")"+" >"+counter [6]+" "+error[6]);
////sumowanie par, które są błędne////
int [] error_sum = new int [7];
System.out.println("\n");
for (int i=0; i<7; i++)
{
if (error[i]=="błąd")
{
System.out.println(counter[i]+" "+error[i]);
for (int j=0; j<7; j++)
{
error_sum[j]=counter[i];
if (error[i]>) break;
}
}
//System.out.print("//"+power[j]+", ");
//System.out.println("Bity zacne: " + bity[i]);
}
System.out.println("\n");
for (int i=0; i<7; i++)
{
System.out.println(error_sum[i]+", ");
}
/*for (int s=0; s<7; s++)
{
if (l1==1) break;
}*/
/*int arryNum[] = { 2, 3, 4, 5, 4, 4, 3 };
int[] counter = new int[] { 0, 0, 0, 0, 0 };
for (int i = 0; i < arryNum.length; i++) {
counter[arryNum[i] - 1]++;
}
for (int i = 0; i < counter.length; i++)
System.out.println((i + 1) + ":" + counter[i]);*/
/*for (int n=65; n<110; n++)
{
sixtyfour[n] = tab[n];
System.out.print(sixtyfour[n]+". ");
if (n%16==0)
{
System.out.println("");
}
for (int a=65; a<110; a++)
{
if (a==1)
{
sum=a++;
}
System.out.println(a+sum);
}
}*/
System.out.println();
}
private static boolean isPowerOfTwo(int x)
{
//return (x & (x-1)) ==0;
return (x!=0) && ((x&(x-1)) ==0);
}
/*public static void powerOfTwo()
{
isPowerOfTwo(x);
System.out.println(x);
}*/
public static void main(String[] args) {
int [] tab = new int[110];
// wywołanie metody wypełniającej tablicę ciągiem losowych bitów 0 lub 1
Losowanie(tab);
System.out.println("\n Bity potęgi dwa: ");
int [] tabBit = new int [7];
zamienBity(tab,tabBit);
System.out.println("////Bity potęgi 2");
sprawdzHamming(tab,tabBit);
//powerOfTwo();
/*int liczby [] = new int[120];
System.out.println("\n");
for (int z=1; z<120;z++)
{
liczby[z]=z;
System.out.print(liczby[z]+", ");
if (z%32==0)
{
System.out.println("");
}
}*/
}
}
This part of code shows me error_sum[7] array, so only wrong bits:
So, after this loop error_sum[7] should be filled (and it appears it is) with only wrong bits. However, if i want to output this array outside this loop, then i got 6 zeros, and on 2nd position, the last wrong bit from error_sum[7].
This do...while loop however, shows me only last wrong bit from error_sum[7] array instead of all (i dont know why?). So do...while loop shows me same wrong (last from array) bit as above for-loop.
Only in first for-loop when i move origin bits between arrays, i got proper output.