[javascript]
/**
* Walks linearly through the list to find an element.
* returns true if it’s found.
*/
function elementIn(collection, element) {
for (var i=0; i < collection.length; i++) {
if (collection[i]==element) {
return true;
}
}
return false;
}
/**
* Returns a new list of n random elements taken out of myList.
*/
function getNElementsAtRandom(myList, n) {
var toGo = n;
var result = [];
var indexesUsed = [];
while (toGo > 0) {
index=-1;
do {
index = Math.floor(Math.random()*(myList.length));
console.log(index);
} while (elementIn(indexesUsed, index));
indexesUsed.push(index);
result.push(myList[index]);
toGo–;
}
return result;
}
[/javascript]