Show the problem's acceptance on the problem page
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// ==UserScript==
// @name Leetcode problem acceptance assistant
// @namespace http://halfcrazy.me
// @version 0.1
// @description Show the problem's acceptance on the problem page
// @author halfcrazy
// @match http*://oj.leetcode.com/problems/*
// @grant none
// ==/UserScript==
function getElementsByClassName(node,classname){
if(node.getElementsByClassName){
return node.getElementsByClassName(classname);
}else{
var results = new Array();
var elems = node.getElementsByTag("*");
for (var i=0;i<elems.length;i++){
if(elems[i].className.indexOf(classname) != -1){
results[elems.length] = elems[i];
}
}
return results;
}
}
function changeTwoDecimal(x)
{
var f_x = parseFloat(x);
if (isNaN(f_x))
{
alert('function:changeTwoDecimal->parameter error');
return false;
}
f_x = Math.round(f_x *100)/100;
return f_x;
}
function insertAfter(newElement, targetElement)
{
var parent = targetElement.parentNode;
if(parent.lastChild == targetElement)
{
parent.appendChild(newElement);
}
else
{
parent.insertBefore(newElement, targetElement.nextSibling);
}
}
var question_title = getElementsByClassName(document,"question-title");
if(typeof(question_title[0]) == "undefined")
{
return;
}
else
{
var Total_Accepted = question_title[0].childNodes[3].getElementsByTagName("strong");
var Total_Submissions = question_title[0].childNodes[5].getElementsByTagName("strong");
var accepted = Total_Accepted[0].innerText;
var submissions = Total_Submissions[0].innerText;
var rate = changeTwoDecimal(accepted/submissions*100);
var newNode = document.createElement("span");
newNode.setAttribute("class", "total-ac text-info");
newNode.innerHTML = "Accepted Rate: <strong>"+rate+"%"+"</strong>";
insertAfter(newNode,question_title[0].childNodes[5]);
}