Wall analyzer 2

var string = "navigating directories cd - change dir ls - list files mkdir - new dir cp - copy file mv - move or rename file rm - delete file rm -rf - delete whole directory .. parent ~ home file processing touch - new empty file cat - print file head - start of file tail - end of file vim - gl hf grep - search in file zcat - view compressed file zip - zip compression system info man - detailed command guides id - about you time - program stopwatch date - system date + time running things python - run python javac - compile java gcc - compile c g++ - compile c++ processes ps xaf - process tree ps aux - show process pkill - kill process by name htop - process monitor commands ctrl+c - stop ctrl+z - pause !! - repeat last command ctrl+r - search command history ";
var numPaints = 0;
var stencils = ["file", "command", "compile", "dir", "process"];

for (var i = 0; i < stencils.length; i++) {
    var thisStencilUsed = 0;
    var stencil = stencils[i];
    while (string.indexOf(stencil) != -1) {
        string = string.replace(stencil, "");
        numPaints++;
        thisStencilUsed++;
    }

    console.log("Stencil " + stencil + " used " + thisStencilUsed + " times.");
}

var array = [];
for (var i = 0; i < string.length; i++) {
    var char = string.charAt(i);
    if (array[char] == null) {
        array[char] = 0;
    }
    array[char]++;
}

var objects = [];

function Stencil(char, freq) {
    this.char = char;
    this.freq = freq;
}

for (var x in array) {
    if (x != ' ') {
        objects.push(new Stencil(x, array[x]));
    }
}

objects.sort(compare);

function compare(a, b) {
    return b.freq - a.freq;
}

console.log(objects);

var stencilCount = 0;
for (var i = 0; i < objects.length; i++) {
    numPaints += objects[i].freq;
    stencilCount += Math.floor(objects[i].freq / 20) + 1;
}

console.log(stencilCount + stencils.length);
console.log(numPaints);