1
00:00:00,850 --> 00:00:09,010
You can add a new element at any position in your list by using the insert insert method.

2
00:00:09,370 --> 00:00:14,950
You do this by specifying the index of the new element and the value of the new item.

3
00:00:14,950 --> 00:00:19,330
In this case, we will make the auxiliary courses that insert here.

4
00:00:19,330 --> 00:00:20,980
First, we will enter the index.

5
00:00:20,980 --> 00:00:29,320
In this case, let's actually add two zero the first index here, and after that we will enter the value.

6
00:00:29,320 --> 00:00:34,240
In this case, let's actually make the let's add new course, the courses list.

7
00:00:34,750 --> 00:00:42,940
And in this case, we will add the computer forensics course and that's it.

8
00:00:43,120 --> 00:00:47,980
So now we will print the auxiliary courses.

9
00:00:47,980 --> 00:00:55,660
And here, as you can see here, under coding training in 33 hours specified and course in the world.

10
00:00:55,660 --> 00:00:58,840
And lastly, we will have here.

11
00:00:59,800 --> 00:01:00,060
Oops.

12
00:01:01,060 --> 00:01:01,730
Combative ranks.

13
00:01:01,750 --> 00:01:10,990
Now, of course, we want to this year, the first year we added the first index with this zero here.

14
00:01:11,170 --> 00:01:19,870
So in this example, we insert a value computer forensics course at the beginning of the list.

15
00:01:19,870 --> 00:01:30,130
So the insert method opens a space position at the zero and stores the value computer forensics course

16
00:01:30,250 --> 00:01:31,090
at here.

17
00:01:31,090 --> 00:01:34,990
So, for example, let's make sure here we.

18
00:01:36,170 --> 00:01:38,710
Oops, let's actually use the boxes.

19
00:01:38,720 --> 00:01:40,670
So one, two, three, four.

20
00:01:40,670 --> 00:01:42,740
We have four boxes, right?

21
00:01:45,720 --> 00:01:46,550
Three.

22
00:01:50,400 --> 00:01:51,990
So here.

23
00:01:53,360 --> 00:02:00,920
If you write like that, it will add the our new value to here and.

24
00:02:02,330 --> 00:02:08,360
Our index Android here is going to be one now from now on here.

25
00:02:09,570 --> 00:02:16,890
Our index Android is going to be one, two, three, four and the newly added.

26
00:02:18,180 --> 00:02:21,360
Computer forensics course is going to be what?

27
00:02:21,570 --> 00:02:22,350
Yes.

28
00:02:22,380 --> 00:02:23,010
Zero.

29
00:02:23,520 --> 00:02:32,010
And as you can see here, this this course is splitted like this, this increase it by one because of

30
00:02:32,010 --> 00:02:33,450
the we added here.

31
00:02:33,600 --> 00:02:43,650
So this operations shifts every other value in the list one position to the right here.

32
00:02:43,980 --> 00:02:47,310
So we can also remove elements from a list.

33
00:02:47,310 --> 00:02:52,200
So actually let's try another example now here one right.

34
00:02:52,230 --> 00:02:53,610
Let's try this now.

35
00:02:54,340 --> 00:02:58,990
And here now we will create the same illustration here.

36
00:02:59,080 --> 00:03:03,730
In this case, for example, one, two.

37
00:03:05,890 --> 00:03:06,670
Three.

38
00:03:08,450 --> 00:03:09,290
All right.

39
00:03:10,260 --> 00:03:14,040
So here we add a new element here.

40
00:03:14,040 --> 00:03:14,650
Right?

41
00:03:14,670 --> 00:03:21,750
So now, from now on, our new element will be added at the here, right?

42
00:03:21,780 --> 00:03:24,150
This in the first index.

43
00:03:24,270 --> 00:03:28,260
So now our element is added here.

44
00:03:29,010 --> 00:03:29,310
Of.

45
00:03:31,740 --> 00:03:34,830
Our element is added here.

46
00:03:36,970 --> 00:03:37,300
Actually.

47
00:03:37,300 --> 00:03:44,890
Instead, we use the blue for the newly added elements and we we didn't touch.

48
00:03:45,430 --> 00:03:46,360
The first element.

49
00:03:46,360 --> 00:03:47,860
So index zero.

50
00:03:49,210 --> 00:03:56,470
And here this index here in this case, Android Kotlin training is going to stay the same, Right?

51
00:03:56,470 --> 00:03:59,230
It will not move or trigger anything.

52
00:03:59,230 --> 00:04:02,830
So it will stay the same.

53
00:04:04,310 --> 00:04:06,440
It will stay the same.

54
00:04:09,130 --> 00:04:13,560
But here we added to this is the new value.

55
00:04:13,570 --> 00:04:16,390
But all of this here three.

56
00:04:18,030 --> 00:04:20,730
Three, four, five.

57
00:04:20,760 --> 00:04:26,700
So here, before insertion, this was two and this was three and this was four.

58
00:04:26,700 --> 00:04:31,350
And there was no computer forensics course in here.

59
00:04:31,350 --> 00:04:34,380
Let's now remove the elements from the list.

60
00:04:34,380 --> 00:04:40,680
So often you will want to remove an item or set a set a set of items from a list.

61
00:04:40,680 --> 00:04:46,080
So, for example, when a player shoots down an alien from the sky, you will most likely want to remove

62
00:04:46,080 --> 00:04:47,850
it from the list of active aliens.

63
00:04:47,850 --> 00:04:53,550
So when a user decides to cancel their account on a web application you created, you will want to remove

64
00:04:53,550 --> 00:05:00,000
that user from the list of active users so you can remove an item according to its position in the list

65
00:05:00,030 --> 00:05:01,560
according to its value.

66
00:05:01,590 --> 00:05:08,610
So if you know the position of the item you want to remove from a list, you can use the Del statement.

67
00:05:09,610 --> 00:05:11,440
So how are we going to do that?

68
00:05:11,440 --> 00:05:14,440
Is now we add it here.

69
00:05:15,910 --> 00:05:17,530
Let's actually leave it here.

70
00:05:18,490 --> 00:05:23,740
Let's actually delete it so the new programmers will not confuse anything with it.

71
00:05:23,740 --> 00:05:25,240
So this is our list, right?

72
00:05:25,390 --> 00:05:28,840
And instead of doing this, let's add to the end.

73
00:05:28,840 --> 00:05:30,400
One, two, three, four.

74
00:05:31,020 --> 00:05:34,410
So zero, one, two, three, four here.

75
00:05:34,410 --> 00:05:35,760
And let's run here.

76
00:05:35,760 --> 00:05:39,720
And as you can see here, it added at the end.

77
00:05:39,810 --> 00:05:41,670
As you can see here, that's it.

78
00:05:42,150 --> 00:05:43,560
So now.

79
00:05:44,370 --> 00:05:48,630
I will also comment that this this is.

80
00:05:50,750 --> 00:05:59,720
This code inserts item to list into, list into list.

81
00:06:00,200 --> 00:06:03,030
And here we will remove an item from it.

82
00:06:03,050 --> 00:06:08,540
So now I want to hear drive again something here which is.

83
00:06:08,840 --> 00:06:11,270
So this is.

84
00:06:12,200 --> 00:06:12,920
One.

85
00:06:16,570 --> 00:06:18,510
We're sorry.

86
00:06:21,610 --> 00:06:23,290
One, two.

87
00:06:28,710 --> 00:06:28,900
Right?

88
00:06:29,500 --> 00:06:30,120
Right.

89
00:06:30,520 --> 00:06:40,150
So here, according to this this element, the computer forensics course goes to here, MySQL goes to

90
00:06:40,150 --> 00:06:40,930
here.

91
00:06:41,460 --> 00:06:44,040
And this poster here.

92
00:06:44,070 --> 00:06:44,550
All right.

93
00:06:44,550 --> 00:06:47,280
Let's actually illustrate it so you will make.

94
00:06:48,120 --> 00:06:49,350
You will understand better.

95
00:06:51,190 --> 00:06:52,960
Yeah, that's it.

96
00:06:53,840 --> 00:06:58,560
So the index of these values are, as you remember, zero.

97
00:06:58,560 --> 00:06:58,820
Oops.

98
00:06:58,820 --> 00:06:59,530
Sorry.

99
00:07:00,540 --> 00:07:03,750
Index of these values are zero.

100
00:07:04,650 --> 00:07:06,510
One, two.

101
00:07:08,250 --> 00:07:10,110
Three and four.

102
00:07:10,230 --> 00:07:10,800
That's it.

103
00:07:11,430 --> 00:07:17,260
So now after that, we will remove that item from the list.

104
00:07:17,280 --> 00:07:20,070
In this case, let's remove the base python.

105
00:07:20,430 --> 00:07:25,440
Let's remove the ethical hacking with python into 20 hours, which is the index for.

106
00:07:25,650 --> 00:07:29,460
Let's actually make it tick on them here.

107
00:07:29,580 --> 00:07:31,200
So here.

108
00:07:32,330 --> 00:07:34,520
We will remove this now, Right?

109
00:07:36,500 --> 00:07:38,120
So Del here.

110
00:07:39,870 --> 00:07:42,900
Oxer the courses and you enter the ID here.

111
00:07:42,900 --> 00:07:44,370
In this you enter the.

112
00:07:45,580 --> 00:07:46,300
Position here.

113
00:07:46,300 --> 00:07:49,660
And in this case, it's two and that's it.

114
00:07:49,870 --> 00:07:54,430
Now, we will print the courses here.

115
00:07:54,430 --> 00:07:59,650
And as you can see here, we have Android coding training here.

116
00:07:59,770 --> 00:08:00,520
Check.

117
00:08:01,260 --> 00:08:02,730
Best python course in the world.

118
00:08:03,560 --> 00:08:04,070
Check.

119
00:08:05,700 --> 00:08:07,470
Designing database models with.

120
00:08:08,300 --> 00:08:10,370
MySQL check.

121
00:08:11,040 --> 00:08:12,990
And computer forensics course.

122
00:08:12,990 --> 00:08:20,700
And as you can see here, we do not have ethical hacking anymore.

123
00:08:20,700 --> 00:08:26,400
So according to this, now the tree has become.

124
00:08:27,470 --> 00:08:29,450
To index.

125
00:08:30,240 --> 00:08:40,530
Index has become index two and index four become index three, and we no longer have index four here.

126
00:08:40,530 --> 00:08:44,820
So this index gone and also it splitted here.

127
00:08:44,820 --> 00:08:52,020
So the design of MySQL here got goes here and computer forensics here goes here.

128
00:08:52,020 --> 00:08:58,020
And in this list we do not have the index four anymore, but we deleted.

129
00:08:58,050 --> 00:09:00,300
Ethical hacking from the index two.

130
00:09:00,450 --> 00:09:02,910
This is how the list works.

131
00:09:02,910 --> 00:09:10,020
So in this case let's actually try what will index four give us here?

132
00:09:16,020 --> 00:09:20,130
Or actually, yes, let's actually instead of this, let's print the value.

133
00:09:21,320 --> 00:09:21,650
So.

134
00:09:22,580 --> 00:09:24,050
Print the value.

135
00:09:25,790 --> 00:09:30,110
Oxer the courses and print the value for all four.

136
00:09:30,500 --> 00:09:32,480
And here, as you can see here.

137
00:09:32,510 --> 00:09:35,940
List index out of range.

138
00:09:35,960 --> 00:09:43,310
This is the reason that gave us because there is no anymore fourth index here.

139
00:09:43,580 --> 00:09:48,380
So actually, instead of this we here, let's actually undelete this.

140
00:09:49,520 --> 00:09:51,710
And yes, perfect.

141
00:09:55,030 --> 00:09:55,540
Perfect.

142
00:09:56,700 --> 00:09:57,270
That's it.

143
00:10:14,760 --> 00:10:18,900
Now let's remove the another item from the position here.

144
00:10:20,150 --> 00:10:23,600
And now let's remove Del Oxley courses.

145
00:10:23,630 --> 00:10:26,390
Let's actually remove the item zero.

146
00:10:27,410 --> 00:10:28,610
And now.

147
00:10:31,330 --> 00:10:33,340
Actually, we don't need that code anymore.

148
00:10:35,310 --> 00:10:36,410
And that's it.

149
00:10:36,420 --> 00:10:40,340
As you can see here, we have left with three items in the list.

150
00:10:40,350 --> 00:10:41,310
So.

151
00:10:44,250 --> 00:10:45,030
That's it.