Removes duplicates from an array

Removes duplicates from an array, with the option to also sort the array using vRO

// VMware vRealize Orchestrator action sample
//
// Removes duplicates from an array, with the option to also sort the array
//
// For vRO 6.0+
//
// Action Inputs:
// a – Array/Any – Array with potential duplicates
// doSort – boolean – Sort the array also? Potentially better performance than unsorted algorithm
//
// Return type: Array/Any

var b = (doSort) ? removeDupesSorted(a) : removeDupesUnsorted(a);
return b;

///////////////////
function removeDupesSorted(a) {
var b = new Array();

if (!a) return null;

if (a.length != 0) {
a.sort();
b.push(a[0]);

for (var i = 0; i < a.length – 1; i++) {
if (a[i+1] != a[i]) b.push(a[i+1]);
}
}

return b;
}

function removeDupesUnsorted(a) {
var b = new Array();

if (!a) return null;

if (a.length != 0) {
for each (var x in a) {
if (!isPresent(x, b)) {
b.push(x);
}
}
}

return b;
}

// is value x present in array ?
function isPresent(x, a) {
if (a) {
for each (var y in a) {
if (x === y) {
return true;
}
}
}

return false;
}