Hi All,
I have created a Vf with  pagination , I want to show page number (Current Page Number/Total Page Numbers) ,so User should be able to navigate to any page by entering page number, 
here is my code..

vf page..

<apex:page controller="LeadPaginate" > <apex:pageMessages ></apex:pageMessages> <apex:pageBlock title="Hello !"> Here is your Document Lead List </apex:pageBlock> <apex:form id="myform"> <apex:pageblock id="pbId" > <apex:pageBlockSection columns="1" > <apex:pageblock > <apex:pageblockButtons location="Top"> <apex:commandButton value="Processed" action="{!clickMe}" /> </apex:pageblockButtons> <div align="right" id="div1"> <apex:outputPanel rendered="{!Setcon.hasPrevious}"> <apex:commandLink id="diableanchor" value="Previous" action="{!Setcon.Previous}" reRender="myform" /> &nbsp; &nbsp; </apex:outputPanel> <apex:outputPanel rendered="{!NOT(Setcon.hasPrevious)}" > <apex:commandLink id="diableanchor1" value="Previous" reRender="myform" style="color: #555555; cursor: default; text-decoration: none;"/> &nbsp; &nbsp; </apex:outputPanel> <apex:outputPanel rendered="{!Setcon.hasNext}"> <apex:commandLink value="Next" action="{!Setcon.Next}" reRender="myform" /> </apex:outputPanel> <apex:outputPanel rendered="{!NOT(Setcon.hasNext)}"> <apex:commandLink value="Next" reRender="myform" style="color: #555555; cursor: default; text-decoration: none;"/> </apex:outputPanel> </div> <apex:pageblocktable value="{!Contact}" var="cc" id="test" > <apex:column headerValue=""> <apex:inputCheckbox value="{!cc.bool}"/> </apex:column> <apex:column value="{!cc.con.Name}"/> <apex:column value="{!cc.con.Approval_Status__c }"/> </apex:pageblocktable> <apex:pageBlockButtons location="Bottom"> </apex:pageBlockButtons> <div align="right" id="div1"> <apex:outputPanel rendered="{!Setcon.hasPrevious}"> <apex:commandLink id="diableanchor2" value="Previous" action="{!Setcon.Previous}" reRender="myform" /> &nbsp; &nbsp; </apex:outputPanel> <apex:outputPanel rendered="{!NOT(Setcon.hasPrevious)}" > <apex:commandLink id="diableanchor3" value="Previous" reRender="myform" style="color: #555555; cursor: default; text-decoration: none;"/> &nbsp; &nbsp; </apex:outputPanel> <apex:outputPanel rendered="{!Setcon.hasNext}"> <apex:commandLink value="Next" action="{!Setcon.Next}" reRender="myform" /> </apex:outputPanel> <apex:outputPanel rendered="{!NOT(Setcon.hasNext)}"> <apex:commandLink value="Next" reRender="myform" style="color: #555555; cursor: default; text-decoration: none;"/> </apex:outputPanel> </div> <apex:actionFunction name="refreshPageSize" action="{!refreshPageSize}" status="fetchStatus" reRender="pbId"/> <apex:selectList value="{!size}" multiselect="false" size="1" onchange="refreshPageSize();"> <apex:selectOptions value="{!ContactsTables}"/> </apex:selectList> <apex:outputText >{!(setCon.pageNumber * size)+1-size}-{!IF((setCon.pageNumber * size)>noOfRecords, noOfRecords,(setCon.pageNumber * size))} of {!noOfRecords}</apex:outputText> </apex:pageblock> <apex:pageBlock > <apex:outputPanel rendered="{!display}"> <apex:pageblocktable value="{!selectedList}" var="w" columns="2" > <apex:column value="{!w.Name}"/> <apex:column value="{!w.Approval_Status__c }"/> </apex:pageblocktable> </apex:outputPanel> </apex:pageblock> </apex:pageBlockSection> </apex:pageblock> </apex:form> </apex:page>

controller...

Public class LeadPaginate{
 
    public Integer size { get; set; }
    Public List<WrapperContactWrapper> wrapperlist;
    Public Integer noOfRecords{get; set;}
    Map <id,Lead> SelectedcontactMap = new Map <id,Lead>();
    public boolean display{get;set;}
    public list<Lead> selectedList {get;set;}
    public List<SelectOption> ContactsTables{get;set;}
 
    Public class WrapperContactWrapper {
        Public Lead con{get;set;}
        Public boolean bool{get;set;}
        public WrapperContactWrapper(Lead c,boolean bool) {
            this.con = c; 
            this.bool = bool;
        }
    }
    public LeadPaginate(){
        size=3;

        ContactsTables= new List<SelectOption>();
        
        ContactsTables.add(new SelectOption('10','10'));
        ContactsTables.add(new SelectOption('20','20'));

        ContactsTables.add(new SelectOption('50','50'));

        ContactsTables.add(new SelectOption('100','100'));
        ContactsTables.add(new SelectOption('200','200'));

    }
 public ApexPages.StandardSetController Setcon {
        get { if(Setcon == Null) {
            Setcon = new ApexPages.StandardSetController(Database.getQueryLocator([Select Id , Name,CreatedDate,Approval_Status__c  from Lead where Approval_Status__c = 'Approved' limit 100 ]));
     
            setCon.setpagesize(size);
            noOfRecords = setCon.getResultSize(); }
            return Setcon;
        }
        set;
    }
    public PageReference refreshPageSize() {
         Setcon.setPageSize(size);
         return null;
    }
   Public List<WrapperContactWrapper> getContact() {
        getSelectedContact();
        wrapperlist = new List <WrapperContactWrapper>();
         
        for(Lead cc : (List<Lead>)Setcon.getRecords()) {
            if( SelectedcontactMap .ContainsKey(cc.id)) {
                wrapperlist.add (new WrapperContactWrapper(cc,true));
            } else {
            wrapperlist.add(new WrapperContactWrapper(cc,false));
            }
        }
        return wrapperlist;
    }
     
    public void getSelectedContact(){
        if(wrapperlist!=null) {
            for(WrapperContactWrapper wr:wrapperlist) {
                if(wr.bool == true) {
                    SelectedcontactMap.put(wr.con.id,wr.con);
                } else {
                    SelectedcontactMap.remove(wr.con.id);     
                }     
            }
       }
    }
    
    public void clickMe() {
        display = true;
        getSelectedContact();
        selectedList = SelectedcontactMap.values();
        wrapperlist = null;
        SelectedcontactMap.clear();
        getContact();
}
     
    public integer pageNumber {
        get {
            return Setcon.getPageNumber();
        }
        set;
    }
    
}

please give me some solution,