First element to occur k times
Submissions: 14554   Accuracy:


  Difficulty: Basic   Marks: 1

Given an array of N integers. The task is to find the first element that occurs K number of times. If no element occurs K times the print -1.

The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. The first line of each test case contains an integer N denoting the size of an array and the number K. The second line of each test case contains N space separated integers denoting elements of the array A[ ].

For each test case in a new line print the required answer.

1 <= T <= 100
1 <= N, K <= 105
1<= A <= 106

Input :
7 2
1 7 4 3 4 8 7
Output :

Both 7 and 4 occur 2 times. But 7 is the first that occurs 2 times.

** For More Input/Output Examples Use 'Expected Output' option **

Contributor: Sujnesh Mishra
Author: sujnesh

If you have purchased any course from GeeksforGeeks then please ask your doubt on course discussion forum. You will get quick replies from GFG Moderators there.

Need help with your code? Please use, generate link and share the link here.

to report an issue on this page.