count frequencies of all elements in array


import java.io. * ;
import java.util. * ;
class frequencies {
public static void main(String args[]) {
int count = 0;
Scanner sc = new Scanner(System. in );
int n[] = new int[20];
int ans[][] = new int[20][2];
int z = 0;
System.out.println(" Enter Numbers : ");
while (true) {
n[z] = sc.nextInt();
if (n[z] == -1) {
break;
}
count++;
z++;
}
int n1[] = new int[count];
for (int i = 0; i < count; i++) {
n1[i] = n[i];
}
for (int i = 0; i < n1.length; i++) {
if (n1[i] == -1) {
break;
}
ans[i][0] = n1[i];
count = 0;
for (int j = 0; j < n1.length; j++) {
if (ans[i][0] == n1[j]) {
count++;
}
}
ans[i][1] = count;
}
int temp = 0;
for (int i = 0; i < n1.length; i++) {
for (int j = 1; j < n1.length - 1; j++) {
if ((ans[j - 1][1]) < (ans[j][1])) {
temp = ans[j - 1][1];
ans[j - 1][1] = ans[j][1];
ans[j][1] = temp;
temp = ans[j - 1][0];
ans[j - 1][0] = ans[j][0];
ans[j][0] = temp;
}
}
}
int print = 0;
System.out.println(" NUMBER : " + ans[0][0] + " Frequency : " + ans[0][1]);
for (int i = 1; i < n1.length; i++) {
if (n1[i] == -1) {
break;
}
for (int j = 0; j < i; j++) {
if (ans[i][0] == ans[j][0]) {
print++;
}
}
if (print == 0) System.out.println(" NUMBER : " + ans[i][0] + " Frequency : " + ans[i][1]);
print = 0;
}
}
}

Output:
 Enter Numbers : 1   5   4   2   1   2   5   1   1   2   4   5   5  -1
 NUMBER : 1     Frequency : 4
 NUMBER : 5     Frequency : 4
 NUMBER : 2     Frequency : 3
 NUMBER : 4     Frequency : 2

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