1
00:00:00,240 --> 00:00:01,260
All right, so.

2
00:00:01,260 --> 00:00:02,010
While loop.

3
00:00:02,010 --> 00:00:03,720
We checked before hand, right?

4
00:00:03,720 --> 00:00:05,480
I wouldn't of had to keep on asking that,

5
00:00:05,480 --> 00:00:07,960
wouldn't have keep on doing that
loop if I didn't ask for it.

6
00:00:07,960 --> 00:00:09,330
Now let's do a do while loop, okay.

7
00:00:09,330 --> 00:00:10,290
So a do while loop.

8
00:00:10,290 --> 00:00:11,400
It's the same concept, right.

9
00:00:11,400 --> 00:00:12,860
We don't know how many times
it's going to happen but

10
00:00:12,860 --> 00:00:14,830
we do know that we want
it to happen one time.

11
00:00:14,830 --> 00:00:17,050
Right, so
it does what's called a post check.

12
00:00:17,050 --> 00:00:21,100
So this is useful when you want to
make sure that one time it happens.

13
00:00:21,100 --> 00:00:23,030
So.
The example that I have for this,

14
00:00:23,030 --> 00:00:24,410
we're totally shifting examples here.

15
00:00:24,410 --> 00:00:28,350
The example that I have for this one,
this pseudo code is Mini-Golf, right?

16
00:00:28,350 --> 00:00:30,540
So, you can't get a hole in zero.

17
00:00:30,540 --> 00:00:31,830
You have to get a hole in one, right?

18
00:00:31,830 --> 00:00:32,560
That's the best you can do.

19
00:00:32,560 --> 00:00:34,430
So you gotta putt once, okay?

20
00:00:34,430 --> 00:00:36,060
So we're gonna say do.

21
00:00:37,230 --> 00:00:39,990
Where, is the ball in the hole
is a Boolean over here.

22
00:00:39,990 --> 00:00:41,020
I should've said, is the ball in the hole?

23
00:00:41,020 --> 00:00:42,250
See, I'm bad at pseduo-code.

24
00:00:42,250 --> 00:00:43,310
And we do puttPutt.

25
00:00:43,310 --> 00:00:47,510
We're gonna call and
see if we hit that ball in the hole and

26
00:00:47,510 --> 00:00:50,920
until here, that's actually, while not.

27
00:00:50,920 --> 00:00:52,370
Right?
In English, too, if you wanted to say,

28
00:00:52,370 --> 00:00:55,960
until something happens, you're really
saying, wow, this isn't happening.

29
00:00:55,960 --> 00:01:00,590
Right?
So, until is a verb, or a whatever

30
00:01:00,590 --> 00:01:04,980
type of word that is in other programming
languages is a keyword in other type of

31
00:01:04,980 --> 00:01:08,530
programming languages, and it really means
while not, but Java does not have that.

32
00:01:08,530 --> 00:01:11,500
So we're gonna do, well, let's code it.

33
00:01:11,500 --> 00:01:12,860
So cross your fingers for me, here we go.

34
00:01:12,860 --> 00:01:14,240
Some more live code.

35
00:01:14,240 --> 00:01:14,890
All right.

36
00:01:14,890 --> 00:01:16,000
So, mini golf.

37
00:01:17,910 --> 00:01:22,070
All right, so I imported something that
we probably have not talked on yet.

38
00:01:22,070 --> 00:01:24,670
It's handy for testing and
example things like this.

39
00:01:24,670 --> 00:01:26,570
It's randomness, right.

40
00:01:26,570 --> 00:01:29,320
It's gonna allow us the ability
to give a 50/50 thing, right.

41
00:01:29,320 --> 00:01:32,000
So I don't know about you but
my mini golf skills is not 50/50,

42
00:01:32,000 --> 00:01:36,840
I usually have about 99, you know I
take a very long time to go through.

43
00:01:36,840 --> 00:01:40,560
So what we'll do is we want one time,
we want to do a putt putt.

44
00:01:40,560 --> 00:01:44,470
And let's keep track of it so
that we can see how bad we did.

45
00:01:44,470 --> 00:01:46,040
Or how bad the computer did,
actually, right?

46
00:01:46,040 --> 00:01:48,380
So we're gonna do numberOfPutts.

47
00:01:48,380 --> 00:01:51,460
Such a weird word, you know, how like
when you're typing words and you're like,

48
00:01:51,460 --> 00:01:52,990
is that really how you spell putt?

49
00:01:52,990 --> 00:01:53,880
I don't know.

50
00:01:53,880 --> 00:01:54,670
And putts, too, like.

51
00:01:54,670 --> 00:01:55,700
All right.

52
00:01:55,700 --> 00:01:59,350
So, boolean ballInHole is gonna be false.

53
00:01:59,350 --> 00:02:01,640
We're gonna start out with it false,
right?

54
00:02:01,640 --> 00:02:05,990
So the do while loop,
we're gonna say do while, and

55
00:02:05,990 --> 00:02:10,096
this is where we're doing the end tells,
so not the ballInHole, right?

56
00:02:10,096 --> 00:02:12,500
So it's a little strange, right?

57
00:02:12,500 --> 00:02:14,270
So you're thinking,
while the ball isn't in the hole,

58
00:02:14,270 --> 00:02:16,270
while that's not true,
keep on looping, okay?

59
00:02:17,400 --> 00:02:23,090
Let's just print out something so
we know that we're put that's not great.

60
00:02:24,230 --> 00:02:25,230
Alright.

61
00:02:25,230 --> 00:02:28,870
So let's use that random generator.

62
00:02:28,870 --> 00:02:30,070
And I called that thing luck,

63
00:02:30,070 --> 00:02:34,200
I called the variable luck, which is what
you need when you're doing this stuff.

64
00:02:34,200 --> 00:02:39,080
And it has random has
the opportunity to return numbers or

65
00:02:39,080 --> 00:02:41,720
other random things, one of the things
that can return is a Boolean.

66
00:02:41,720 --> 00:02:44,370
And remember, Booleans are true or false.

67
00:02:44,370 --> 00:02:47,260
We're setting ballInHole to the Boolean,
so therefore when it comes to check,

68
00:02:47,260 --> 00:02:49,400
we'll see, we want to increment.

69
00:02:49,400 --> 00:02:52,810
I don't know if everybody knows
what this incrementing is or

70
00:02:52,810 --> 00:02:54,150
if we remember what that is.

71
00:02:54,150 --> 00:02:57,880
What it does is it basically is shorthand
for saying, I could say number of putts

72
00:02:57,880 --> 00:03:03,010
equals what number of putts was plus one.

73
00:03:03,010 --> 00:03:06,070
So it just takes whatever's in there and
adds one to it.

74
00:03:06,070 --> 00:03:07,360
It's a shorthand.

75
00:03:07,360 --> 00:03:08,280
Let's keep it in there.

76
00:03:09,440 --> 00:03:13,070
We're gonna talk about that
a little bit later, too.

77
00:03:13,070 --> 00:03:15,460
All right.

78
00:03:15,460 --> 00:03:17,330
For sure one time it goes through.

79
00:03:17,330 --> 00:03:18,620
It will at least be one, right?

80
00:03:18,620 --> 00:03:19,910
Cuz they tried one time.

81
00:03:19,910 --> 00:03:22,380
And if the ball went in the hole,
it would be over, and good job,

82
00:03:22,380 --> 00:03:23,620
we did a hole in one.

83
00:03:23,620 --> 00:03:27,760
But we'll say, you got it in %d,
because it's a number.

84
00:03:31,580 --> 00:03:34,810
And we're gonna pass n
the number of putts.

85
00:03:34,810 --> 00:03:38,820
What do you say?

86
00:03:38,820 --> 00:03:40,240
I remember that.

87
00:03:40,240 --> 00:03:41,100
Let's do it.

88
00:03:42,770 --> 00:03:44,250
I don't know where my history went.

89
00:03:46,040 --> 00:03:47,750
Let's see.
So we'll call this Minigolf.

90
00:03:48,890 --> 00:03:52,570
We're gonna compile Minigolf, and
then we are going to run Minigolf.

91
00:03:53,930 --> 00:03:58,640
Don't put the Java extension there.

92
00:03:58,640 --> 00:04:00,880
One, hole in one, we did it randomly.

93
00:04:00,880 --> 00:04:02,035
We randomly did a hole in one!

94
00:04:02,035 --> 00:04:03,040
>> [APPLAUSE]
>> Yeah!

95
00:04:03,040 --> 00:04:05,210
Still, a hole in one.

96
00:04:05,210 --> 00:04:06,230
Come on, oh there it is.

97
00:04:06,230 --> 00:04:08,600
Three putts.
This should.

98
00:04:10,390 --> 00:04:11,510
Wow, it's doing pretty good.

99
00:04:11,510 --> 00:04:12,950
>> Looks good.

100
00:04:12,950 --> 00:04:13,530
>> There's two putts.

101
00:04:13,530 --> 00:04:14,420
Yeah.
>> [LAUGH]

102
00:04:14,420 --> 00:04:14,920
>> Yeah.

103
00:04:14,920 --> 00:04:15,850
Let's go golfing and

104
00:04:15,850 --> 00:04:17,426
let's put some money on it.
Cool.

105
00:04:17,426 --> 00:04:18,563
>> [LAUGH]