Commit3e71fc9

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Create: 1472-design-browser-history.rs / .ts / .js / .go

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Lines changed: 36 additions & 0 deletions

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	`1`	`+package main`
	`2`	`+`
	`3`	`+import"math"`
	`4`	`+`
	`5`	`+funcmain() {`
	`6`	`+`
	`7`	`+}`
	`8`	`+`
	`9`	`+typeBrowserHistorystruct {`
	`10`	`+history []string`
	`11`	`+currentint`
	`12`	`+}`
	`13`	`+`
	`14`	`+funcConstructor(homepagestring)BrowserHistory {`
	`15`	`+returnBrowserHistory{`
	`16`	`+history: []string{homepage},`
	`17`	`+current:0,`
	`18`	`+}`
	`19`	`+}`
	`20`	`+`
	`21`	`+func (this*BrowserHistory)Visit(urlstring) {`
	`22`	`+this.history=this.history[0:this.current+1]`
	`23`	`+this.history=append(this.history,url)`
	`24`	`+this.current++`
	`25`	`+}`
	`26`	`+`
	`27`	`+func (this*BrowserHistory)Back(stepsint)string {`
	`28`	`+this.current=int(math.Max(float64(this.current)-float64(steps),0))`
	`29`	`+returnthis.history[this.current]`
	`30`	`+}`
	`31`	`+`
	`32`	`+func (this*BrowserHistory)Forward(stepsint)string {`
	`33`	`+this.current=int(math.Min(float64(this.current)+float64(steps),float64(len(this.history)-1)))`
	`34`	`+returnthis.history[this.current]`
	`35`	`+}`
	`36`	`+`

Lines changed: 34 additions & 0 deletions

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	`1`	`+classBrowserHistory{`
	`2`	`+constructor(homepage){`
	`3`	`+this.history=[homepage];`
	`4`	`+this.current=0;`
	`5`	`+}`
	`6`	`+`
	`7`	`+/**`
	`8`	`+ *@param {string} url`
	`9`	`+ *@return {void}`
	`10`	`+ */`
	`11`	`+`
	`12`	`+visit(url){`
	`13`	`+this.history[++this.current]=url;`
	`14`	`+this.history.length=this.current+1;`
	`15`	`+}`
	`16`	`+`
	`17`	`+/**`
	`18`	`+ *@param {number} steps`
	`19`	`+ *@return {string}`
	`20`	`+ */`
	`21`	`+back(steps){`
	`22`	`+this.current=Math.max(this.current-steps,0);`
	`23`	`+returnthis.history[this.current];`
	`24`	`+}`
	`25`	`+`
	`26`	`+/**`
	`27`	`+ *@param {number} steps`
	`28`	`+ *@return {string}`
	`29`	`+ */`
	`30`	`+forward(steps){`
	`31`	`+this.current=Math.min(this.current+steps,this.history.length-1);`
	`32`	`+returnthis.history[this.current];`
	`33`	`+}`
	`34`	`+}`

Lines changed: 28 additions & 0 deletions

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	`1`	`+structBrowserHistory{`
	`2`	`+history:Vec<String>,`
	`3`	`+current:usize,`
	`4`	`+}`
	`5`	`+`
	`6`	`+implBrowserHistory{`
	`7`	`+fnnew(homepage:String) ->Self{`
	`8`	`+Self{`
	`9`	`+history:vec![homepage],`
	`10`	`+current:0,`
	`11`	`+}`
	`12`	`+}`
	`13`	`+`
	`14`	`+fnvisit(&mutself,url:String){`
	`15`	`+self.current +=1;`
	`16`	`+self.history.splice(self.current.., std::iter::once(url));`
	`17`	`+}`
	`18`	`+`
	`19`	`+fnback(&mutself,steps:i32) ->String{`
	`20`	`+self.current =self.current.saturating_sub(stepsasusize);`
	`21`	`+self.history[self.current].clone()`
	`22`	`+}`
	`23`	`+`
	`24`	`+fnforward(&mutself,steps:i32) ->String{`
	`25`	`+self.current =(self.current + stepsasusize).min(self.history.len() -1);`
	`26`	`+self.history[self.current].clone()`
	`27`	`+}`
	`28`	`+}`

Lines changed: 24 additions & 0 deletions

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	`1`	`+classBrowserHistory{`
	`2`	`+history:string[];`
	`3`	`+current:number;`
	`4`	`+`
	`5`	`+constructor(homepage:string){`
	`6`	`+this.history=[homepage];`
	`7`	`+this.current=0;`
	`8`	`+}`
	`9`	`+`
	`10`	`+visit(url:string):void{`
	`11`	`+this.history[++this.current]=url;`
	`12`	`+this.history.length=this.current+1;`
	`13`	`+}`
	`14`	`+`
	`15`	`+back(steps:number):string{`
	`16`	`+this.current=Math.max(this.current-steps,0);`
	`17`	`+returnthis.history[this.current];`
	`18`	`+}`
	`19`	`+`
	`20`	`+forward(steps:number):string{`
	`21`	`+this.current=Math.min(this.current+steps,this.history.length-1);`
	`22`	`+returnthis.history[this.current];`
	`23`	`+}`
	`24`	`+}`

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