JSArrays Drills

https://repl.it/@wwebby1/Creating-arrays-drill-1
https://repl.it/@wwebby1/Adding-array-items-drills
https://repl.it/@wwebby1/Accessing-array-items-drill
https://repl.it/@wwebby1/Array-length-and-access-drill
https://repl.it/@wwebby1/Array-copying-I-drill

Copying II Drill (Repl.it broken)
function minusLastItem(array) {
return array.slice(0, array.length-1)
}

function copyFirstHalf(array) {
return array.slice(0, array.length/2 );
}

Squares drill
function squares(array) {
return array.map(x => x * x);
}
Greatest to Least drill
function greatestToLeast(array) {
array.sort();
return array.reverse();
}

Short Words drill
function shortWords(array) {
return array.filter(word => word.length < 5);
}

Divisible by 5 drill
function isDivBy5(num){
return num % 5 === 0;
}
function divisibleBy5(array) {
return array.find(isDivBy5);
}