Longest Consecutive Subsequence

PROBLEM :
Given an array of integers A[], the task is to complete the function which returns an integer denoting the length of the longest sub-sequence such that elements in the sub-sequence are consecutive integers, the consecutive numbers can be in any order.

Examples

Input: A[] = {1, 9, 3, 10, 4, 20, 2};
Output: 4
The subsequence 1, 3, 4, 2 is the longest subsequence
of consecutive elements

Input: A[] = {36, 41, 56, 35, 44, 33, 34, 92, 43, 32, 42}
Output: 5
The subsequence 36, 35, 33, 34, 32 is the longest subsequence
of consecutive elements.
Input:
The first line of input contains an integer T denoting the no of test cases. Then T test cases follow. Each test case contains an integer N. Then in the next line are N space separated values of the array A[].

Output:
For each test case in a new line output will be the length of the longest consecutive increasing sub-sequence present in the array A[ ] .

Constraints:
1<=T<=100
1<=N<=100

Example(To be used only for expected output):

Input:
2
7
1 9 3 10 4 20 2
11
36 41 56 35 44 33 34 92 43 32 42

Output:
4
5

--------------------------------------------------------------------------------
SIMPLE c++ IMPLEMENTATION :
--------------------------------------------------------------------------------

void sort(int [],int ) ;
int findLongestConseqSubseq(int arr[], int n)
{
    sort(arr,n) ;
   
    int maxlen ,i ,len ;
    maxlen=0 ;
    len=1 ;
   
    for(i=0;i<n-1;i++)
    {
        if(arr[i]==arr[i+1])
            continue ;
        else if(arr[i]+1==arr[i+1])
            len++ ;
        else if(len>maxlen)
        {
            maxlen=len ;
            len=1 ;
        }
        else
            len=1 ;
    }
    if(len>maxlen)
        maxlen=len ;
    return maxlen ;
}

void sort(int arr[],int no)
{
    int i,j,temp ;
   
    for(i=0;i<no-1;i++)
    {
        for(j=0;j<no-i-1;j++)
        {
            if(arr[j]>arr[j+1])
            {
                temp=arr[j] ;
                arr[j]=arr[j+1] ;
                arr[j+1]=temp ;
            }
        }
    }
}

---------------------------------------------------------------------------------

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