Search function that will search data fom array as per user textinput

ViewController-Search-Integration-Using-swift3=Part2.swift

 func searchRecordsAsPerText(_ textfield:UITextField) {
        searchedArray.removeAll()
        if textfield.text?.characters.count != 0 {
            for strCountry in countriesArray {
                let range = strCountry.lowercased().range(of: textfield.text!, options: .caseInsensitive, range: nil,   locale: nil)
                
                if range != nil {
                    searchedArray.append(strCountry)
                }
            }
        } else {
            searchedArray = countriesArray
        }
        
        tblCountries.reloadData()
    }