<div id="demo"></div>
function findSolution(target) {
function find(start, history) {
if (start === target) {
document.getElementById("demo").innerHTML = history;
return history;
} else if (start > target) {
return null;
}
var found = find(start + 5, "(" + history + " + 5)");
if (!found) found = find(start * 3, "(" + history + " * 3)");
return found;
}
return find(1, "1");
}
findSolution(13);
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This Pen doesn't use any external JavaScript resources.