A funny program I just write,Check!

here is the problem,it might be some interview stuff from one company,never mind...

Give you 10 number [0，1，2，3，4，5，6，7，8，9],and we need you return me another 10 number to satisfy:
the number in the second line is the number of times in which the first line number show up in the second line..
it's hard to understand,I'll give an example:
for:[0,1,2,3,4,5,6,7,8,9]
we have: [6,2,1,0,0,0,1,0,0,0]
it means:the number '0' show 6 times in the second line,and the number '1' show 2 times in the second line......

I just solve it with Java.
you guys can try it. I will put my code on later if you need it..

this sounds like one of the very few things I thought were diversions when I was on the diversions forum. I shall move it there.

Campbell Ritchie wrote:this sounds like one of the very few things I thought were diversions when I was on the diversions forum. I shall move it there.

you are the boss,man.

so if input is
[11,44,99,11,22,55,66,77,10,99] output should be-
[1,5,2,0,2,2,2,2,0,4]? frequency of numbers from 0 to 9?

Nope. If you look at the sequence [6,2,1,0,0,0,1,0,0,0] you will see that there are 6 0's, 2 1's, 1 2's, 0 3's, and so on. The business about [0,1,2,3,4,5,6,7,8,9] is just confusing and misleading, so ignore that.

Arjun Shastry wrote:so if input is
[11,44,99,11,22,55,66,77,10,99] output should be-
[1,5,2,0,2,2,2,2,0,4]? frequency of numbers from 0 to 9?

the input is constant[1,2,3,4,5,6,7,8,9]. if you choose other numbers like[11,44,99,11,22,55,66,77,10,99],
the 1 should be the times that 11 shows up in your answer,just as [1,5,2,0,2,2,2,2,0,4]. it's obvious that the answer
is wrong,because 11 show 0 times in the second line.
it's not about the sequence,it's just the number

Paul Clapham wrote:Nope. If you look at the sequence [6,2,1,0,0,0,1,0,0,0] you will see that there are 6 0's, 2 1's, 1 2's, 0 3's, and so on. The business about [0,1,2,3,4,5,6,7,8,9] is just confusing and misleading, so ignore that.

[0,1,2,3,4,5,6,7,8,9]is the first line,
and the answer [6,2,1,0,0,0,1,0,0,0] is the second line.

it's like your answer just determines your answer...
you can show this character out in your code..

Is [6,2,1,0,0,0,1,0,0,0] the only answer?

Ryan McGuire wrote:Is [6,2,1,0,0,0,1,0,0,0] the only answer?

for now,that's true..
but if you change the input,there could be some other conditions..

all right,here's my code:

package demo;

import java.util.Arrays;

/**
 * 
 * @author louis
 */
public class Test {

private static final int[] GIVEN = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };

public static void main(String[] args) {
  int[] Dest = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
  int len = 10;
  go(GIVEN, Dest, len);
  System.out.println("THE RESULT IS:" + Arrays.toString(Dest));
 }

public static void go(int[] arrGiven, int[] arrDest, int len) {
  while (true) {
   find(arrGiven, arrDest, len);
   System.out.println(Arrays.toString(arrDest));
   if (!check(arrGiven, arrDest, len)) {
    continue;
   } else {
    break;
   }
  }
 }

public static void find(int[] arrGiven, int[] arrDest, int len) {
  for (int i = 0; i < len; i++) {
   int count = 0;
   for (int j = 0; j < len; j++) {
    if (arrGiven[i] == arrDest[j]) {
     count++;
    }
   }
   arrDest[i] = count;
  }
 }

public static boolean check(int[] arrGiven, int[] arrDest, int len) {
  for (int i = 0; i < len; i++) {
   int count = 0;
   for (int j = 0; j < len; j++) {
    if (arrGiven[i] == arrDest[j]) {
     count++;
    }
   }
   if (arrDest[i] != count) {
    return false;
   }
  }
  return true;
 }
}

Console:
[10, 0, 0, 0, 0, 0, 0, 0, 0, 0]
[9, 0, 0, 0, 0, 0, 0, 0, 0, 1]
[8, 1, 0, 0, 0, 0, 0, 0, 1, 0]
[7, 2, 1, 0, 0, 0, 0, 1, 0, 0]
[6, 2, 1, 0, 0, 0, 1, 0, 0, 0]
THE RESULT IS:[6, 2, 1, 0, 0, 0, 1, 0, 0, 0]