Hash Tables (Key Value based Associative data structure )

Hash Tables

              A hash table is a data structure also known as a dictionary or associative array   except you store each value (object) using a key. It is associative type compact (key-value) based data structure.

·      To create an empty hash table.

                     $hash_Key_Val =  @{}

·      Add value one by one

                     $key = 'Samsatya'

                     $value = 36

$hash_Key_Val[$key] = $value

·      Add values in a loop

for($i = 0;$i -lt $Key.Count ; $i++)

                     {

                               $hash_Key_Val[$Key[$i]] = $Val[$i]; 

                     }

·      Check for the match in the value and return corresponding key

                    foreach($value in $List)

                     {

                                            $CorrespKey =  ($hash_Key_Val.GetEnumerator() | ? {$_.Value -eq $value }).Name     

}