Question

HI ,
In Java Script ,

var a =”apple-orange-mango”
var b =”grapes-cheery-apple”

var c = a + b // Merging with 2 variable

var c should have value is “apple-orange-mango-grapes-cheery” .Duplicated should be removed.

Thanks ,
Chells

Answer 1

Here’s a brute force algorithm:

var a;
var b; // inputs

var words = split(a+b);
var map = {};
var output;
for( index in words ) {
    if( map[ words[index] ]!=undefined ) continue;
    map[ words[index] ] = true;
    output += (words[index] + '-');
}
output[output.length-1]=' '; // remove the last '-'

The map acts as a hashtable.

Thats it!