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2018_05_25_code_war.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>20180525_react</title>
<script src="./build/react.js"></script>
<script src="./build/react-dom.js"></script>
<script src="./build/browser.min.js"></script>
<script src="./index.js"></script>
<style>
.box {
padding: 20px;
border: 1px black dashed;
}
#root {
padding-bottom: 500px;
}
</style>
</head>
<body>
<h1>20180525</h1>
<div id="root">
</div>
<script type="text/babel">
let tool = new ToolLibrary();
class SumOfPositive extends React.Component {
constructor(props) {
super(props);
this.state = {
array:[],
sum:''
};
this.handleClick = this.handleClick.bind(this);
}
handleClick(){
this.state.array.push(this.input.value);
this.state.sum = this.state.array.reduce((prev,curr)=>{
if (tool.isClass(Number(curr)) === "Number" && curr>0) {
return Number(prev)+Number(curr);
}
return Number(prev);
},0);
this.setState(this.state);
}
render() {
return (
<div className="box">
<h2>第一题：计算数组中大于零的值的和，输入数值，输出和</h2>
<h3>
You get an array of numbers, return the sum of all of the positives ones.
Example [1,-4,7,12] => 1 + 7 + 12 = 20
Note: array may be empty, in this case return 0.
</h3>
<input type="text" ref={(input) => this.input = input}/>
<input type="button" value="ok" onClick={this.handleClick}/>
<span>array:{this.state.array.join(",")}</span>
<p>result:{ this.state.sum }</p>
</div>
);
}
}
class NextPrime extends React.Component {
constructor(props) {
super(props);
this.state = {
instructions:"输入一个大于零的数",
result:'',
value:'',
time:''
};
this.handleClick = this.handleClick.bind(this);
this.handleInputChange = this.handleInputChange.bind(this);
}
handleInputChange(e){
this.setState({
value:e.target.value
})
}
handleClick(){
let val = Number(this.state.value),tag = true,startTime = new Date();
if (tool.isClass(val) === "Number" && val > 0) {
this.state.instructions = "格式有效";
do {
tag = true;
for (var i = 2; i <= Math.sqrt(val); i++) {
if (val%i==0){
tag = false;
break
}
}
if(tag){
this.state.result = val;
}else {
val++;
}
}while (tag===false);
}else {
this.state.instructions = "格式问题";
}
this.state.time = (new Date()) - startTime;
this.setState(this.state);
}
render() {
return (
<div className="box">
<h2>第二题：寻找下一个质数</h2>
<h3>
Get the next prime number!
You will get a number n (>= 0) and your task is to find the next prime number.
Make sure to optimize your code: there will numbers tested up to about 1012
</h3>
<input type="text" value={this.state.value} onChange={this.handleInputChange}/>
<input type="button" value="ok" onClick={this.handleClick}/>
<span>说明:{this.state.instructions}</span>
<p>result:{ this.state.result }</p>
<p>耗时:{ this.state.time }ms</p>
</div>
);
}
}
class NumTranChines extends React.Component {
constructor(props) {
super(props);
this.state = {
instructions:"输入一个正整数",
result:'',
value:'',
time:''
};
this.handleClick = this.handleClick.bind(this);
this.handleInputChange = this.handleInputChange.bind(this);
}
handleInputChange(e){
this.setState({
value:e.target.value
})
}
handleClick(){
let val = Number(this.state.value),startTime = new Date(),result=[];
let arr = ["零","一","二","三","四","五","六","七","八","九"];
let level =["","十","百","千","万","十","百","千","亿","十","百","千","万","十","百","千","万"];
let order = ["十","百","千","万","亿"];
if (tool.isClass(val) === "Number" && val%1=== 0 &&val > 0) {
this.state.instructions = "格式有效";
val = this.state.value.split("").reverse();
val.forEach((item,index)=>{
result.unshift(level[index]);
result.unshift(arr[Number(item)])
});
var copyResult = tool.deepClone(result);
let tag = 0;
result.forEach((item,index)=>{
if(item === "零"){
if(index === result.length-2){
copyResult.splice(index-tag,1);
return;
}
if (order.indexOf(result[index - 1]) > order.indexOf(result[index + 1])) {
copyResult.splice(index+1-tag,1)
}else if(order.indexOf(result[index - 1]) < order.indexOf(result[index + 1])){
copyResult.splice(index-tag,1)
}
tag++;
}
});
console.log(copyResult);
for(var i=0;i<copyResult.length;i++){
if(copyResult[i] === "零"){
if(copyResult[i+1] === "零" || copyResult[i+1] === ""){
copyResult.splice(i,1);
i--;
}else if(order.indexOf(copyResult[i+1])<=2 && order.indexOf(copyResult[i+1])>=0 ){
copyResult.splice(i,2);
i=i-2;
}else if(order.indexOf(copyResult[i+1])>2){
if(order.indexOf(copyResult[i-1])!==-1 && order.indexOf(copyResult[i-1])<order.indexOf(copyResult[i+1])){
copyResult.splice(i,1);
i=i-1;
}else if(order.indexOf(copyResult[i-1])!==-1 && order.indexOf(copyResult[i-1])>=order.indexOf(copyResult[i+1])) {
copyResult.splice(i,2);
i=i-2;
}
}
console.log(copyResult);
}
}
}else {
this.state.instructions = "格式问题";
}
this.state.result = copyResult;
this.state.time = (new Date()) - startTime;
this.setState(this.state);
}
render() {
return (
<div className="box">
<h2>第三题：数字中文转换</h2>
<input type="text" value={this.state.value} onChange={this.handleInputChange}/>
<input type="button" value="ok" onClick={this.handleClick}/>
<span>说明:{this.state.instructions}</span>
<p>result:{ this.state.result }</p>
<p>耗时:{ this.state.time }ms</p>
</div>
);
}
}
const div = <div>
<SumOfPositive />
<NextPrime />
<NumTranChines />
</div>
ReactDOM.render(
div,
document.getElementById('root')
);
</script>
</body>
</html>