Group Anagrams

You have been given an array/list of strings 'inputStr'. You are supposed to return the strings as groups of anagrams such that strings belonging to a particular group are anagrams of one another.

An anagram is a word or phrase formed by rearranging the letters of a different word or phrase. We can generalize this in string processing by saying that an anagram of a string is another string with the same quantity of each character in it, in any order.

Note:

The order in which the groups and members of the groups are printed does not matter.

For example:

inputStr = {"eat","tea","tan","ate","nat","bat"}
Here {“tea”, “ate”,” eat”} and {“nat”, “tan”} are grouped as anagrams. Since there is no such string in “inputStr” which can be an anagram of “bat”, thus, “bat” will be the only member in its group.

Input Format :

The first line contains an integer 'T', which denotes the number of test cases or queries to be run. Then the test cases follow.

The first line of each test case contains an integer 'N' which denotes the number of strings.

The next line contains 'N' single space-separated strings. The strings consist of lower case English alphabets only.

Output Format:

For each test case/query, print the anagrams belonging to the same group in a single line, where all the anagrams are separated by a single space, and each group will be printed in a separate line.

The output for every test case will be printed in a separate line.

Note

You don't have to print anything. It has already been taken care of. Just implement the function.

Constraints :

1<= T <= 50
1<= N <= 100
1<= K <= 10

Where 'T' is the number of test cases, 'N' is the length of the given array/list of strings and ‘K’ is the maximum length of a string in the given array/list.

Time limit: 1 sec.