public List<Account> allAccs{get;set;}

public addRowRemoveRow(){
    allAccs = new List<Account>();
    Account acc1 = new Account();
    allAccs.add(acc1);
}
public void addRowMethod(){
    Account acc1 = new Account();
    allAccs.add(acc1);
}

public void removeRowMethod(){

}
public void saveMethod(){
    insert allAccs;
    clearMethod();
}



public void clearMethod(){
    integer finalCount = allAccs.size();
    allAccs.clear();
    for(integer i=0;i<finalCount;i++){
        Account acc1 = new Account();
        allAccs.add(acc1);

    }

}

</apex:column>
          <apex:column headerValue="Model">
              <apex:inputtext value="{!Accvariable.Name}"/>
          </apex:column>
          <apex:column headerValue="Version">
              <apex:inputtext value="{!Accvariable.Phone}"/>
          </apex:column>
          <apex:column headerValue="Discount">
              <apex:inputtext value="{!Accvariable.website}"/>
          </apex:column>
     </apex:dataTable>
      <apex:pageBlockButtons location="TOP">
      <apex:commandButton value="addRow" action="{!addRowMethod}" rerender="anyName" />
     <!-- <apex:commandButton value="removeRow" action="{!removeRowMethod}"/>-->

      <apex:commandButton value="save" action="{!saveMethod}"/>