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You Can't Javascript Under Pressure
function doubleInteger(i) {
// i will be an integer. Double it and return it.
return i *= 2;
}
function isNumberEven(i) {
// i will be an integer. Return true if it's even, and false if it isn't.
return i%2 === 0 ? true : false;
}
function getFileExtension(i) {
// i will be a string, but it may not have a file extension.
// return the file extension (with no period) if it has one, otherwise false
var exp = /^.*\.(.*)/;
return i.match(exp) ? i.match(exp)[1] : false;
}
function longestString(i) {
// i will be an array.
// return the longest string in the array
var max = "";
i.forEach(function(element){
if((typeof element) === 'string'){
if(element.length > max.length){
max = element;
}
}
});
return max;
}
function arraySum(i) {
// i will be an array, containing integers, strings and/or arrays like itself.
// Sum all the integers you find, anywhere in the nest of arrays.
var sum = 0;
function burrowInto(array) {
array.forEach(function(element){
if ((typeof element) === 'number'){
sum += element;
} else if (Array.isArray(element)){
burrowInto(element);
}
})
}
burrowInto(i);
return sum;
}
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