我正在使用谷歌的CSE创建谷歌搜索引擎。我每次搜索查询时都试图获得一个随机结果。例如：当我搜索＆＃34;咖啡＆＃34;引擎从所有＆＃34;咖啡结果＆＃34;中随机返回一个结果。
是否有人可以帮我随机制作结果？
谢谢！
答案 0 :(得分：0)
/dev/random读取，因为它将包含随机流。%RANDOM% environment variable。Math.random();（请参阅here）。mixed array_rand ( array $array [, int $num = 1 ] ) int rand ( int $min , int $max )或pick a random element from an array new Random().nextInt(number_of_results + 1);。chosen_result = results_array[random_num]; 对结果进行编号（即将它们存储在数组中）并使用随机数来选择结果（//
// File.swift
// Reading Logs
//
// Created by Andrew on 12/8/15.
// Copyright © 2015 Wilson Apps for Education. All rights reserved.
//
import UIKit
class UserLogin {
var loginAlert = UIAlertView()
var user: String = ""
var pass: String = ""
func checkLogin() -> Bool{
let defaults = NSUserDefaults.standardUserDefaults()
let stat = defaults.valueForKey("loggedIn")
if(String(stat!) == "0"){
return false
}else{
return true
}
}
func logout(){
let defaults = NSUserDefaults.standardUserDefaults()
defaults.setValue("0", forKey: "loggedIn")
defaults.setValue("", forKey: "logKey")
defaults.setValue("0", forKey: "userKey")
}
func login(username username: String, password: String, completion: (result: String) -> Void){
self.user = username
self.pass = password
let url = "http://www.wilsonfamily5.org/rlog/checkLogin.php?u=\(username)&p=\(password)"
let nsUrl = NSURL(string:url)
let nsUrlRequest = NSURLRequest(URL: nsUrl!)
NSURLSession.sharedSession().dataTaskWithRequest(nsUrlRequest){
(data, response, error) in
guard
let data = data,
let contents = NSString(data:data, encoding:NSUTF8StringEncoding)
else { return }
dispatch_async(dispatch_get_main_queue(), { () -> Void in
if(contents as String == "0"){
self.loginAlert = UIAlertView(title: "No Account Found", message: "We did not find an account matching that criterea. Do you want us to create you an account?", delegate:nil, cancelButtonTitle: "No")
self.loginAlert.addButtonWithTitle("Yes")
self.loginAlert.show()
}else{
let defaults = NSUserDefaults.standardUserDefaults()
defaults.setValue(contents as String, forKey: "userKey")
defaults.setValue("1", forKey: "loggedIn")
completion(result: "1")
}
})
}.resume()
}
func register(username: String, password: String){
let url = "http://www.wilsonfamily5.org/rlog/newAccount.php?u=\(username)&p=\(password)"
let nsUrl = NSURL(string:url)
let nsUrlRequest = NSURLRequest(URL: nsUrl!)
NSURLSession.sharedSession().dataTaskWithRequest(nsUrlRequest){
(data, response, error) in
guard
let data = data,
let contents = NSString(data:data, encoding:NSUTF8StringEncoding)
else { return }
dispatch_async(dispatch_get_main_queue(), { () -> Void in
let defaults = NSUserDefaults.standardUserDefaults()
defaults.setValue(contents as String, forKey: "userKey")
defaults.setValue("1", forKey: "loggedIn")
})
}.resume()
}
func alertView(alertView: UIAlertView, clickedButtonAtIndex buttonIndex: Int) {
print("ButtonClicked")
if(buttonIndex == 1){
print("1ButtonClicked")
register(user, password: pass)
}
}
}
）
如果这不符合您的需求，您需要提供更多信息，例如您为此使用的编程语言。