Objective c “随机”中无重复项；案例；列表_Objective C_Code Duplication

Objective c “随机”中无重复项；案例；列表

objective-c

Objective c “随机”中无重复项；案例；列表,objective-c,code-duplication,Objective C,Code Duplication,我是一个完全的初学者，几乎没有编程方面的知识，但我正在帮助我11岁的儿子创建一个小测验应用程序，我们有一个大问题，因为我们不能让每个类别的问题在所有问题出现之前都不重复。请在下面找到我们目前的情况（受我们在网上找到的一个示例启发），如果有一个简单的解决方案不需要很好的xcode体验就可以实现，我将非常感谢您在这个问题上的帮助提前感谢，当然，如果问题需要进一步澄清，请告诉我： -(void)Category2{ switch (QuestionSelected) { case 0:

我是一个完全的初学者，几乎没有编程方面的知识，但我正在帮助我11岁的儿子创建一个小测验应用程序，我们有一个大问题，因为我们不能让每个类别的问题在所有问题出现之前都不重复。请在下面找到我们目前的情况（受我们在网上找到的一个示例启发），如果有一个简单的解决方案不需要很好的xcode体验就可以实现，我将非常感谢您在这个问题上的帮助

提前感谢，当然，如果问题需要进一步澄清，请告诉我：

-(void)Category2{

switch (QuestionSelected) {
    case 0:
        QuestionText.text = [NSString stringWithFormat:@"question1?"];
        [Answer1 setTitle:@"A1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"A2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"A3" forState:UIControlStateNormal];
        Answer3Correct = YES;
        break;

    case 1:
        QuestionText.text = [NSString stringWithFormat:@"question2"];
        [Answer1 setTitle:@"A1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"A2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"A3" forState:UIControlStateNormal];
        Answer2Correct = YES;
        break;

    case 2:
        QuestionText.text = [NSString stringWithFormat:@"question3"];
        [Answer1 setTitle:@"A1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"A2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"A3" forState:UIControlStateNormal];
        Answer1Correct = YES;
        break;




    default:
        break;
}

}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
    // Custom initialization
}
    return self;
}

- (void)viewDidLoad
{

if (GameInProgress == NO) {
    LivesNumber = 3;
    ScoreNumber = 0;
    GameInProgress = YES;
}


Result.hidden = YES;
Exit.hidden = YES;
StartOver.hidden = YES;

Lives.text = [NSString stringWithFormat:@"%i", LivesNumber];
Score.text = [NSString stringWithFormat:@"%i", ScoreNumber];



Answer1Correct = NO;
Answer2Correct = NO;
Answer3Correct = NO;


LevelLoaded = [[NSUserDefaults standardUserDefaults] integerForKey:@"LevelSaved"];

QuestionSelected = arc4random_uniform(5);

附录（2014年7月4日）

请原谅我，因为我们是新来的网站，我们已经回应了PJS在下面的评论他的答案，我相信格式使它不清楚。请在下面再次找到我们项目当前状态的副本，希望他能看到出了什么问题（副本仍然出现）：

LevelLoaded=[[NSUserDefaults standardUserDefaults]整数工作：@“LevelSaved”]；
整数长度=20；
int myArray[]={0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}；
对于（int i=0；i


阿登杜姆2号（10.07.2014）
请在下面找到整个m文件：
（此处的随机值仅适用于类别1）
这就是你所说的FOR循环中的开关块吗？
它仍然在重复这些问题。我是不是把课文放错位置了
#import "Game.h"

@interface Game ()


@end


@implementation Game



-(void)RightAnswer{

ScoreNumber = ScoreNumber + 1;
Score.text = [NSString stringWithFormat:@"%i", ScoreNumber];
StartOver.hidden = NO;
Answer1.hidden = YES;
Answer2.hidden = YES;
Answer3.hidden = YES;
QuestionText.hidden = YES;
Result.hidden = NO;
Result.image = [UIImage imageNamed:@"rightanswer.jpg"];


}

-(void)WrongAnswer{

LivesNumber = LivesNumber - 1;
Lives.text = [NSString stringWithFormat:@"%i", LivesNumber];
StartOver.hidden = NO;
Answer1.hidden = YES;
Answer2.hidden = YES;
Answer3.hidden = YES;
QuestionText.hidden = YES;
Result.hidden = NO;
Result.image = [UIImage imageNamed:@"wronganswer.jpg"];

if (LivesNumber == 0) {
    Result.image =  [UIImage imageNamed:@"gameover.jpg"];
    StartOver.hidden = YES;
    Exit.hidden = NO;
    GameInProgress = NO;

}

}


-(IBAction)Answer1:(id)sender{


if (Answer1Correct == YES) {
    [self RightAnswer];
}
else{
    [self WrongAnswer];
}

}

-(IBAction)Answer2:(id)sender{

if (Answer2Correct == YES) {
    [self RightAnswer];
}
else{
    [self WrongAnswer];
}

}
-(IBAction)Answer3:(id)sender{

if (Answer3Correct == YES) {
    [self RightAnswer];
}
else{
    [self WrongAnswer];
}

}


-(void)Category1{

int length = 3;
int myArray [] = {0,1,2};


for (int i = 0; i < length - 1; ++i) {
    int j = arc4random_uniform(length - i) + i;
    int tmp = myArray[i];
    myArray[i] = myArray[j];
    myArray[j] = tmp;

}

for (int i = 0; i < length; ++i) {
    QuestionSelected = myArray[i];
}

switch (QuestionSelected) {


    case 0:
        QuestionText.text = [NSString stringWithFormat:@"question1"];
        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer3Correct = YES;
        break;

    case 1:
        QuestionText.text = [NSString stringWithFormat:@"question2"];
        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer1Correct = YES;
        break;

    case 2:
        QuestionText.text = [NSString stringWithFormat:@"question3"];
        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer1Correct = YES;
        break;


    default:
        break;


}


}
-(void)Category2{

switch (QuestionSelected) {
    case 0:
        QuestionText.text = [NSString stringWithFormat:@"question1"];
        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer3Correct = YES;
        break;

    case 1:
        QuestionText.text = [NSString stringWithFormat:@"question2"];
        [Answer1 setTitle:@"T.Cubillas(PER)" forState:UIControlStateNormal];
        [Answer2 setTitle:@"R.Rensenbrink(NET)" forState:UIControlStateNormal];
        [Answer3 setTitle:@"J.Jordan(SCO)" forState:UIControlStateNormal];
        Answer2Correct = YES;
        break;

    case 2:
        QuestionText.text = [NSString stringWithFormat:@"question3"];
        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer1Correct = YES;
        break;



    default:
        break;
}

}
-(void)Category3{

switch (QuestionSelected) {
    case 0:
        QuestionText.text = [NSString stringWithFormat:@"question1"];


        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer2Correct = YES;
        break;

    case 1:
        QuestionText.text = [NSString stringWithFormat:@"question2"];
        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer2Correct = YES;
        break;

    case 2:
        QuestionText.text = [NSString stringWithFormat:@"question3"];
        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer3Correct = YES;
        break;

    default:
        break;
}



}



- (void)viewDidLoad

{

if (GameInProgress == NO) {
    LivesNumber = 3;
    ScoreNumber = 0;
    GameInProgress = YES;
}


Result.hidden = YES;
Exit.hidden = YES;
StartOver.hidden = YES;

Lives.text = [NSString stringWithFormat:@"%i", LivesNumber];
Score.text = [NSString stringWithFormat:@"%i", ScoreNumber];



Answer1Correct = NO;
Answer2Correct = NO;
Answer3Correct = NO;


LevelLoaded = [[NSUserDefaults standardUserDefaults] integerForKey:@"LevelSaved"];




switch (LevelLoaded) {


    case 1:
        LevelSelected.text = [NSString stringWithFormat:@"Beginner"];
        [self Category1];
        break;
    case 2:
        LevelSelected.text = [NSString stringWithFormat:@"Intermediate"];
        [self Category2];
        break;
    case 3:
        LevelSelected.text = [NSString stringWithFormat:@"Expert"];
        [self Category3];
        break;

    default:
        break;


[super viewDidLoad];

}

}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];

}

@end

#导入“Game.h”
@界面游戏（）
@结束
@实施游戏
-（无效）正确答案{
ScoreNumber=ScoreNumber+1；
Score.text=[NSString stringWithFormat:@“%i”，ScoreNumber]；
StartOver.hidden=否；
回答1.隐藏=是；
回答2.hidden=是；
回答3.hidden=是；
QuestionText.hidden=是；
Result.hidden=否；
Result.image=[UIImage ImageName:@“rightanswer.jpg”]；
}
-（无效）回答错误{
LivesNumber=LivesNumber-1；
Lives.text=[NSString stringWithFormat:@“%i”，LivesNumber]；
StartOver.hidden=否；
回答1.隐藏=是；
回答2.hidden=是；
回答3.hidden=是；
QuestionText.hidden=是；
Result.hidden=否；
Result.image=[UIImage ImageName:@“errorAnswer.jpg”]；
if（LivesNumber==0）{
Result.image=[UIImage ImageName:@“gameover.jpg”]；
StartOver.hidden=是；
Exit.hidden=否；
GameInProgress=否；
}
}
-（iAction）回答1：（id）发送者{
如果（回答1正确==是）{
[自我回答]；
}
否则{
[自我回答]；
}
}
-（iAction）回答2：（id）发送者{
如果（回答2正确==是）{
[自我回答]；
}
否则{
[自我回答]；
}
}
-（iAction）应答者3：（id）发送者{
如果（回答3正确==是）{
[自我回答]；
}
否则{
[自我回答]；
}
}
-（无效）类别1{
整数长度=3；
int myArray[]={0,1,2}；
对于（int i=0；i#import "Game.h"

@interface Game ()


@end


@implementation Game



-(void)RightAnswer{

ScoreNumber = ScoreNumber + 1;
Score.text = [NSString stringWithFormat:@"%i", ScoreNumber];
StartOver.hidden = NO;
Answer1.hidden = YES;
Answer2.hidden = YES;
Answer3.hidden = YES;
QuestionText.hidden = YES;
Result.hidden = NO;
Result.image = [UIImage imageNamed:@"rightanswer.jpg"];


}

-(void)WrongAnswer{

LivesNumber = LivesNumber - 1;
Lives.text = [NSString stringWithFormat:@"%i", LivesNumber];
StartOver.hidden = NO;
Answer1.hidden = YES;
Answer2.hidden = YES;
Answer3.hidden = YES;
QuestionText.hidden = YES;
Result.hidden = NO;
Result.image = [UIImage imageNamed:@"wronganswer.jpg"];

if (LivesNumber == 0) {
    Result.image =  [UIImage imageNamed:@"gameover.jpg"];
    StartOver.hidden = YES;
    Exit.hidden = NO;
    GameInProgress = NO;

}

}


-(IBAction)Answer1:(id)sender{


if (Answer1Correct == YES) {
    [self RightAnswer];
}
else{
    [self WrongAnswer];
}

}

-(IBAction)Answer2:(id)sender{

if (Answer2Correct == YES) {
    [self RightAnswer];
}
else{
    [self WrongAnswer];
}

}
-(IBAction)Answer3:(id)sender{

if (Answer3Correct == YES) {
    [self RightAnswer];
}
else{
    [self WrongAnswer];
}

}


-(void)Category1{

int length = 3;
int myArray [] = {0,1,2};


for (int i = 0; i < length - 1; ++i) {
    int j = arc4random_uniform(length - i) + i;
    int tmp = myArray[i];
    myArray[i] = myArray[j];
    myArray[j] = tmp;

}

for (int i = 0; i < length; ++i) {
    QuestionSelected = myArray[i];
}

switch (QuestionSelected) {


    case 0:
        QuestionText.text = [NSString stringWithFormat:@"question1"];
        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer3Correct = YES;
        break;

    case 1:
        QuestionText.text = [NSString stringWithFormat:@"question2"];
        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer1Correct = YES;
        break;

    case 2:
        QuestionText.text = [NSString stringWithFormat:@"question3"];
        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer1Correct = YES;
        break;


    default:
        break;


}


}
-(void)Category2{

switch (QuestionSelected) {
    case 0:
        QuestionText.text = [NSString stringWithFormat:@"question1"];
        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer3Correct = YES;
        break;

    case 1:
        QuestionText.text = [NSString stringWithFormat:@"question2"];
        [Answer1 setTitle:@"T.Cubillas(PER)" forState:UIControlStateNormal];
        [Answer2 setTitle:@"R.Rensenbrink(NET)" forState:UIControlStateNormal];
        [Answer3 setTitle:@"J.Jordan(SCO)" forState:UIControlStateNormal];
        Answer2Correct = YES;
        break;

    case 2:
        QuestionText.text = [NSString stringWithFormat:@"question3"];
        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer1Correct = YES;
        break;



    default:
        break;
}

}
-(void)Category3{

switch (QuestionSelected) {
    case 0:
        QuestionText.text = [NSString stringWithFormat:@"question1"];


        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer2Correct = YES;
        break;

    case 1:
        QuestionText.text = [NSString stringWithFormat:@"question2"];
        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer2Correct = YES;
        break;

    case 2:
        QuestionText.text = [NSString stringWithFormat:@"question3"];
        [Answer1 setTitle:@"answer1" forState:UIControlStateNormal];
        [Answer2 setTitle:@"answer2" forState:UIControlStateNormal];
        [Answer3 setTitle:@"answer3" forState:UIControlStateNormal];
        Answer3Correct = YES;
        break;

    default:
        break;
}



}



- (void)viewDidLoad

{

if (GameInProgress == NO) {
    LivesNumber = 3;
    ScoreNumber = 0;
    GameInProgress = YES;
}


Result.hidden = YES;
Exit.hidden = YES;
StartOver.hidden = YES;

Lives.text = [NSString stringWithFormat:@"%i", LivesNumber];
Score.text = [NSString stringWithFormat:@"%i", ScoreNumber];



Answer1Correct = NO;
Answer2Correct = NO;
Answer3Correct = NO;


LevelLoaded = [[NSUserDefaults standardUserDefaults] integerForKey:@"LevelSaved"];




switch (LevelLoaded) {


    case 1:
        LevelSelected.text = [NSString stringWithFormat:@"Beginner"];
        [self Category1];
        break;
    case 2:
        LevelSelected.text = [NSString stringWithFormat:@"Intermediate"];
        [self Category2];
        break;
    case 3:
        LevelSelected.text = [NSString stringWithFormat:@"Expert"];
        [self Category3];
        break;

    default:
        break;


[super viewDidLoad];

}

}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];

}

@end

/* Create an array of 5 indices */
int length = 5;
int myArray[] = {0,1,2,3,4};

/* This loop performs a Fisher-Yates shuffle.   */
/* Could be implemented as a function or method */
/* for clarity or encapsulation purposes.       */
for (int i = 0; i < length - 1; ++i) {
    int j = arc4random_uniform(length - i) + i;
    int tmp = myArray[i];
    myArray[i] = myArray[j];
    myArray[j] = tmp;
}

for (int i = 0; i < length; ++i) {
    QuestionSelected = myArray[i];
    // do whatever the heck you want with QuestionSelected
}