WEBVTT 00:00.850 --> 00:09.010 You can add a new element at any position in your list by using the insert insert method. 00:09.370 --> 00:14.950 You do this by specifying the index of the new element and the value of the new item. 00:14.950 --> 00:19.330 In this case, we will make the auxiliary courses that insert here. 00:19.330 --> 00:20.980 First, we will enter the index. 00:20.980 --> 00:29.320 In this case, let's actually add two zero the first index here, and after that we will enter the value. 00:29.320 --> 00:34.240 In this case, let's actually make the let's add new course, the courses list. 00:34.750 --> 00:42.940 And in this case, we will add the computer forensics course and that's it. 00:43.120 --> 00:47.980 So now we will print the auxiliary courses. 00:47.980 --> 00:55.660 And here, as you can see here, under coding training in 33 hours specified and course in the world. 00:55.660 --> 00:58.840 And lastly, we will have here. 00:59.800 --> 01:00.060 Oops. 01:01.060 --> 01:01.730 Combative ranks. 01:01.750 --> 01:10.990 Now, of course, we want to this year, the first year we added the first index with this zero here. 01:11.170 --> 01:19.870 So in this example, we insert a value computer forensics course at the beginning of the list. 01:19.870 --> 01:30.130 So the insert method opens a space position at the zero and stores the value computer forensics course 01:30.250 --> 01:31.090 at here. 01:31.090 --> 01:34.990 So, for example, let's make sure here we. 01:36.170 --> 01:38.710 Oops, let's actually use the boxes. 01:38.720 --> 01:40.670 So one, two, three, four. 01:40.670 --> 01:42.740 We have four boxes, right? 01:45.720 --> 01:46.550 Three. 01:50.400 --> 01:51.990 So here. 01:53.360 --> 02:00.920 If you write like that, it will add the our new value to here and. 02:02.330 --> 02:08.360 Our index Android here is going to be one now from now on here. 02:09.570 --> 02:16.890 Our index Android is going to be one, two, three, four and the newly added. 02:18.180 --> 02:21.360 Computer forensics course is going to be what? 02:21.570 --> 02:22.350 Yes. 02:22.380 --> 02:23.010 Zero. 02:23.520 --> 02:32.010 And as you can see here, this this course is splitted like this, this increase it by one because of 02:32.010 --> 02:33.450 the we added here. 02:33.600 --> 02:43.650 So this operations shifts every other value in the list one position to the right here. 02:43.980 --> 02:47.310 So we can also remove elements from a list. 02:47.310 --> 02:52.200 So actually let's try another example now here one right. 02:52.230 --> 02:53.610 Let's try this now. 02:54.340 --> 02:58.990 And here now we will create the same illustration here. 02:59.080 --> 03:03.730 In this case, for example, one, two. 03:05.890 --> 03:06.670 Three. 03:08.450 --> 03:09.290 All right. 03:10.260 --> 03:14.040 So here we add a new element here. 03:14.040 --> 03:14.650 Right? 03:14.670 --> 03:21.750 So now, from now on, our new element will be added at the here, right? 03:21.780 --> 03:24.150 This in the first index. 03:24.270 --> 03:28.260 So now our element is added here. 03:29.010 --> 03:29.310 Of. 03:31.740 --> 03:34.830 Our element is added here. 03:36.970 --> 03:37.300 Actually. 03:37.300 --> 03:44.890 Instead, we use the blue for the newly added elements and we we didn't touch. 03:45.430 --> 03:46.360 The first element. 03:46.360 --> 03:47.860 So index zero. 03:49.210 --> 03:56.470 And here this index here in this case, Android Kotlin training is going to stay the same, Right? 03:56.470 --> 03:59.230 It will not move or trigger anything. 03:59.230 --> 04:02.830 So it will stay the same. 04:04.310 --> 04:06.440 It will stay the same. 04:09.130 --> 04:13.560 But here we added to this is the new value. 04:13.570 --> 04:16.390 But all of this here three. 04:18.030 --> 04:20.730 Three, four, five. 04:20.760 --> 04:26.700 So here, before insertion, this was two and this was three and this was four. 04:26.700 --> 04:31.350 And there was no computer forensics course in here. 04:31.350 --> 04:34.380 Let's now remove the elements from the list. 04:34.380 --> 04:40.680 So often you will want to remove an item or set a set a set of items from a list. 04:40.680 --> 04:46.080 So, for example, when a player shoots down an alien from the sky, you will most likely want to remove 04:46.080 --> 04:47.850 it from the list of active aliens. 04:47.850 --> 04:53.550 So when a user decides to cancel their account on a web application you created, you will want to remove 04:53.550 --> 05:00.000 that user from the list of active users so you can remove an item according to its position in the list 05:00.030 --> 05:01.560 according to its value. 05:01.590 --> 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. 05:09.610 --> 05:11.440 So how are we going to do that? 05:11.440 --> 05:14.440 Is now we add it here. 05:15.910 --> 05:17.530 Let's actually leave it here. 05:18.490 --> 05:23.740 Let's actually delete it so the new programmers will not confuse anything with it. 05:23.740 --> 05:25.240 So this is our list, right? 05:25.390 --> 05:28.840 And instead of doing this, let's add to the end. 05:28.840 --> 05:30.400 One, two, three, four. 05:31.020 --> 05:34.410 So zero, one, two, three, four here. 05:34.410 --> 05:35.760 And let's run here. 05:35.760 --> 05:39.720 And as you can see here, it added at the end. 05:39.810 --> 05:41.670 As you can see here, that's it. 05:42.150 --> 05:43.560 So now. 05:44.370 --> 05:48.630 I will also comment that this this is. 05:50.750 --> 05:59.720 This code inserts item to list into, list into list. 06:00.200 --> 06:03.030 And here we will remove an item from it. 06:03.050 --> 06:08.540 So now I want to hear drive again something here which is. 06:08.840 --> 06:11.270 So this is. 06:12.200 --> 06:12.920 One. 06:16.570 --> 06:18.510 We're sorry. 06:21.610 --> 06:23.290 One, two. 06:28.710 --> 06:28.900 Right? 06:29.500 --> 06:30.120 Right. 06:30.520 --> 06:40.150 So here, according to this this element, the computer forensics course goes to here, MySQL goes to 06:40.150 --> 06:40.930 here. 06:41.460 --> 06:44.040 And this poster here. 06:44.070 --> 06:44.550 All right. 06:44.550 --> 06:47.280 Let's actually illustrate it so you will make. 06:48.120 --> 06:49.350 You will understand better. 06:51.190 --> 06:52.960 Yeah, that's it. 06:53.840 --> 06:58.560 So the index of these values are, as you remember, zero. 06:58.560 --> 06:58.820 Oops. 06:58.820 --> 06:59.530 Sorry. 07:00.540 --> 07:03.750 Index of these values are zero. 07:04.650 --> 07:06.510 One, two. 07:08.250 --> 07:10.110 Three and four. 07:10.230 --> 07:10.800 That's it. 07:11.430 --> 07:17.260 So now after that, we will remove that item from the list. 07:17.280 --> 07:20.070 In this case, let's remove the base python. 07:20.430 --> 07:25.440 Let's remove the ethical hacking with python into 20 hours, which is the index for. 07:25.650 --> 07:29.460 Let's actually make it tick on them here. 07:29.580 --> 07:31.200 So here. 07:32.330 --> 07:34.520 We will remove this now, Right? 07:36.500 --> 07:38.120 So Del here. 07:39.870 --> 07:42.900 Oxer the courses and you enter the ID here. 07:42.900 --> 07:44.370 In this you enter the. 07:45.580 --> 07:46.300 Position here. 07:46.300 --> 07:49.660 And in this case, it's two and that's it. 07:49.870 --> 07:54.430 Now, we will print the courses here. 07:54.430 --> 07:59.650 And as you can see here, we have Android coding training here. 07:59.770 --> 08:00.520 Check. 08:01.260 --> 08:02.730 Best python course in the world. 08:03.560 --> 08:04.070 Check. 08:05.700 --> 08:07.470 Designing database models with. 08:08.300 --> 08:10.370 MySQL check. 08:11.040 --> 08:12.990 And computer forensics course. 08:12.990 --> 08:20.700 And as you can see here, we do not have ethical hacking anymore. 08:20.700 --> 08:26.400 So according to this, now the tree has become. 08:27.470 --> 08:29.450 To index. 08:30.240 --> 08:40.530 Index has become index two and index four become index three, and we no longer have index four here. 08:40.530 --> 08:44.820 So this index gone and also it splitted here. 08:44.820 --> 08:52.020 So the design of MySQL here got goes here and computer forensics here goes here. 08:52.020 --> 08:58.020 And in this list we do not have the index four anymore, but we deleted. 08:58.050 --> 09:00.300 Ethical hacking from the index two. 09:00.450 --> 09:02.910 This is how the list works. 09:02.910 --> 09:10.020 So in this case let's actually try what will index four give us here? 09:16.020 --> 09:20.130 Or actually, yes, let's actually instead of this, let's print the value. 09:21.320 --> 09:21.650 So. 09:22.580 --> 09:24.050 Print the value. 09:25.790 --> 09:30.110 Oxer the courses and print the value for all four. 09:30.500 --> 09:32.480 And here, as you can see here. 09:32.510 --> 09:35.940 List index out of range. 09:35.960 --> 09:43.310 This is the reason that gave us because there is no anymore fourth index here. 09:43.580 --> 09:48.380 So actually, instead of this we here, let's actually undelete this. 09:49.520 --> 09:51.710 And yes, perfect. 09:55.030 --> 09:55.540 Perfect. 09:56.700 --> 09:57.270 That's it. 10:14.760 --> 10:18.900 Now let's remove the another item from the position here. 10:20.150 --> 10:23.600 And now let's remove Del Oxley courses. 10:23.630 --> 10:26.390 Let's actually remove the item zero. 10:27.410 --> 10:28.610 And now. 10:31.330 --> 10:33.340 Actually, we don't need that code anymore. 10:35.310 --> 10:36.410 And that's it. 10:36.420 --> 10:40.340 As you can see here, we have left with three items in the list. 10:40.350 --> 10:41.310 So. 10:44.250 --> 10:45.030 That's it.