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Sorting.js
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import React, { Component } from "react";
import '../../styles/Sorting.css';
import { motion } from "framer-motion";
import selectionSort from "./algorithms/SelectionSort";
import mergeSort from "./algorithms/MergeSort";
import quickSort from "./algorithms/QuickSort";
import { NavLink } from "react-router-dom";
const springAnim = {
type: "spring",
damping: 20,
stiffness: 300
};
class Sorting extends Component{
constructor(){
super();
this.state={
arr:[],
method:"Algorithms",
length:0,
compare:{
i:null,
j:null
},
sorted:[],
speed:100
}
}
createArray=(e=Math.floor(window.innerWidth/50)/2)=>{
let arr=[];
for(let i=0;i<e;i++){
arr.push({
value:Math.floor(Math.random() * ((window.innerHeight/4)-30+1))+30,
id:"id-"+i
})
}
this.setState({
arr:arr,
length:e,
sorted:[],
compare:{
}
})
}
changeArray=(e)=>{
this.createArray(e.target.value)
}
componentDidMount(){
this.createArray();
window.addEventListener("resize",(e)=>{
this.createArray();
})
}
randomize=()=>{
this.createArray(this.state.length)
}
sortFunc=(e)=>{
e.preventDefault();
var arr=this.state.arr;
let length=this.state.arr.length;
var results=[]
document.getElementById('error').style="display:none";
if(this.state.method=="Algorithms"){
document.getElementById('error').style="display:block";
}
else{
if(this.state.method=="Selection Sort")
results=selectionSort(arr,length);
else if(this.state.method=="Merge Sort")
results=mergeSort(arr,length);
else if(this.state.method=="Quick Sort")
results=quickSort(arr,length);
for(let i=0;i<results.length;i++){
setTimeout(()=>{
this.setState({
arr:results[i]
})
},this.state.speed*i)
}
}
}
changeSpeed=(e)=>{
this.setState({
speed:1100-e.target.value
})
}
render(){
return(
<div>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">Sorting</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<li className="nav-item">
<NavLink exact to="/" className="nav-link">Home</NavLink>
</li>
<li class="nav-item ">
<a class="nav-link" href="#" onClick={this.randomize}>Randomize <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
{this.state.method}
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#" onClick={()=>this.setState({method:"Selection Sort"})}>Selection Sort</a>
<a class="dropdown-item" href="#" onClick={()=>this.setState({method:"Merge Sort"})}>Merge sort</a>
<a class="dropdown-item" href="#" onClick={()=>this.setState({method:"Quick Sort"})}>Quick sort</a>
</div>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Controls
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<li class="ml-3 nav-item">
<input onChange={this.changeArray} type="range" min="2" max={Math.floor(window.screen.width/50)} defaultValue={Math.floor((window.screen.width/50)/2)} id="changeSize" />
<a class="nav-link">Increase Array Size</a>
</li>
<li class="ml-3 nav-item">
<input onChange={this.changeSpeed} type="range" min="100" max={1000} defaultValue={500} id="changeSize"/>
<a class="nav-link">Increase Speed</a>
</li>
</div>
</li>
<div id="error" class="alert alert-danger" style={{marginLeft:"10px",display:"none"}} role="alert">
Select an algorithm first!
</div>
</ul>
<form class="form-inline my-2 my-lg-0">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit" onClick={this.sortFunc}>Sort</button>
</form>
</div>
</nav>
<div className="bars" id="bars" style={{margin:"20px"}}>
{
(this.state.arr.map((element,index) =>
<motion.div
key={element.id}
layout transition={springAnim}
className={`bar ${element.style}`}
id={element.id}
style={{height:element.value*3,order:index}}
>
{element.value}
</motion.div>
))}
</div>
</div>
)
}
}
export default Sorting;