WEBVTT 00:01.110 --> 00:03.060 Let's solve the next item. 00:03.390 --> 00:10.830 So the problem here is greater function for food that determines if barometer number is a perfect number. 00:10.830 --> 00:15.300 So it needs a number which needs to be provided. 00:15.750 --> 00:20.550 And this function should tell us if the number is specific number. 00:20.610 --> 00:22.170 Now, what is a positive number? 00:22.530 --> 00:29.550 A ballpark number is if it is factors, including one, but not the number itself. 00:29.850 --> 00:32.460 Some Stoody number itself. 00:32.490 --> 00:34.290 So, for example, we have number six. 00:34.500 --> 00:37.680 So the factors of six would be one, two and three. 00:38.490 --> 00:41.970 And when we add one, two and three, it gives six as a result. 00:42.240 --> 00:43.410 So it is a perfect number. 00:44.550 --> 00:49.620 So we need to find a particular number if it is perfect or not. 00:51.030 --> 00:51.360 Right. 00:51.630 --> 00:54.930 So try this at your end. 00:55.590 --> 00:57.830 Please note the conditions which are given. 00:57.840 --> 01:04.590 So we need to run this for a range of numbers between one and thousand and return whatever number is 01:04.590 --> 01:05.070 perfect. 01:05.610 --> 01:05.940 OK. 01:06.120 --> 01:07.890 So you can possibly do. 01:07.890 --> 01:13.200 And I told them this question and you can look at the solution in case you want. 01:13.830 --> 01:15.180 So you can post a video now. 01:22.900 --> 01:28.540 OK, so let's solve the solution, Smiths solve this problem now. 01:30.850 --> 01:34.480 So we will not create the function first, we will try to solve. 01:34.510 --> 01:41.110 Find the logic first, and then we will convert this logic into a solution, into dual function. 01:42.460 --> 01:45.580 So let's create a sum. 01:45.580 --> 01:51.700 So let's first of all, we need to find out the numbers or let's consider a number, let's say in. 01:52.950 --> 01:55.180 And this end is equal to six. 01:55.450 --> 01:55.750 OK. 01:56.230 --> 01:57.910 Now let's create some. 01:58.300 --> 02:00.520 And assign this on as zero. 02:01.930 --> 02:10.750 Now for number in the range, whatever we are providing for, let's say, four numbers for whatever 02:10.750 --> 02:13.390 number there to number six, we are trying to solve this. 02:13.630 --> 02:14.830 So if in. 02:26.660 --> 02:29.580 Let's see divisible by any numbers. 02:29.930 --> 02:39.500 So let's try it four of my double numbers or for I in range. 02:41.690 --> 02:46.290 So the number factor can not be something which is zero. 02:46.310 --> 02:48.560 So the fact that has to be greater than zero. 02:48.860 --> 02:56.630 So we are seeing for a number from one to, let's say, number in total, that particular in for any 02:56.630 --> 02:56.990 number. 02:56.990 --> 02:58.970 We are checking the number itself. 02:59.360 --> 03:01.790 So we are checking from one to the number two. 03:02.330 --> 03:11.660 And because we will not consider six as the factors, we can go up in the range in and we need to check 03:12.290 --> 03:17.390 if the number is completely divisible by this factor or not. 03:17.810 --> 03:19.220 So we are saying if 03:22.670 --> 03:32.240 I is equal to zero, then let's simply put it this way. 03:33.380 --> 03:33.710 OK. 03:33.890 --> 03:35.450 So let's do this for now. 03:36.110 --> 03:37.340 So we are saying. 03:37.790 --> 03:41.660 So what it does is it checks for all the numbers from one to end. 03:42.170 --> 03:47.310 And whatever number is completely divisible by this number. 03:47.330 --> 03:51.250 So basically, all the factors it is giving out as a result. 03:51.290 --> 03:52.820 So it is printing all the factors. 03:53.120 --> 03:57.440 So let's say in sort of six, we had two forty eight. 03:58.130 --> 04:00.670 Then it will give Wollard all of its factors. 04:00.680 --> 04:04.640 If we had, let's say, seventy six, it will give all of its factors. 04:04.880 --> 04:05.990 So it goes like that. 04:07.400 --> 04:09.560 So this is what we are doing now. 04:09.620 --> 04:11.400 After this, we are seeing. 04:13.250 --> 04:15.560 So it is doing this one particular number. 04:15.890 --> 04:19.670 And then we are saying if the sum 04:22.760 --> 04:25.640 is equal to the number itself. 04:26.750 --> 04:27.080 OK. 04:27.320 --> 04:33.910 So it is checking for the entire range for this number. 04:33.920 --> 04:36.460 And so once it does it, it will. 04:36.470 --> 04:39.710 And the numbers would need to sum the numbers also. 04:39.980 --> 04:45.410 So we are seeing some physical do some plus 04:48.140 --> 04:51.110 I instead of some, let's call it. 04:54.510 --> 04:54.880 Yes. 04:55.590 --> 04:59.190 So that it does not override the actual stomach function. 04:59.730 --> 05:00.660 So we'll see. 05:01.320 --> 05:01.640 Here. 05:03.810 --> 05:10.950 And if it is equal to N, then we us we will return to. 05:14.130 --> 05:19.560 If not, then, yes, we will. 05:24.220 --> 05:25.050 The don 05:27.690 --> 05:31.800 was not the source for a particular number. 05:32.100 --> 05:37.410 Now we want to do this for a large list of numbers. 05:37.410 --> 05:39.450 We want to do it for multiple numbers. 05:39.870 --> 05:40.200 Right. 05:40.500 --> 05:44.070 So this will be done for a particular number. 05:44.070 --> 05:47.790 Now, I want to do this for multiple numbers, so I need to create a function for it. 05:48.150 --> 05:51.810 So how do I convert this into a function for converting this into a function? 05:52.200 --> 05:58.710 I can simply do what this perfect. 06:00.930 --> 06:09.150 And it will take and as an input and it will do all these steps for us. 06:10.260 --> 06:18.780 You can see I simply did a single tab which shifted all the line of code by one tab. 06:19.080 --> 06:22.020 So I don't need to keep pressing tab. 06:22.020 --> 06:27.240 Every time we want to move line, I can simply select everything and just do a single tab, push up 06:27.450 --> 06:27.870 everything. 06:30.030 --> 06:33.510 Now, once I'm done with this, I can run this piece of code. 06:34.440 --> 06:37.340 So let's say I want to run this for a large number. 06:37.350 --> 06:40.620 I want to run this for, let's say, 50 numbers, a thousand numbers. 06:40.920 --> 06:46.770 I can simply say for an in range. 06:49.050 --> 06:49.650 Thousand. 06:52.620 --> 06:54.600 Now, I don't want to run it for zero. 06:54.600 --> 06:56.610 So I can simply say start from one. 06:56.970 --> 07:01.520 And I want to consider a thousand here because I want to rantel thousand. 07:01.530 --> 07:07.180 So I need to give one thousand one, because then only it will run from one to one thousand. 07:07.230 --> 07:09.420 If I give one no extra, I don't need to do it. 07:09.930 --> 07:13.080 And after that, I want to run this function again and again. 07:13.440 --> 07:18.720 So I will see if I will run this function. 07:18.820 --> 07:24.800 I say I'll run both fake and inside this I will pass. 07:24.810 --> 07:26.880 And so it will run this. 07:27.090 --> 07:33.360 And every time this returns true because I have set fatal condition that it should return. 07:33.360 --> 07:33.690 True. 07:34.110 --> 07:39.960 If the number is perfect, that is, if the storm is equal to the number itself, then it will return 07:39.960 --> 07:40.080 it. 07:40.080 --> 07:43.830 So if it is returning true, then this is a condition itself. 07:43.830 --> 07:44.940 So I can simply say here. 07:45.600 --> 07:48.540 Well, if they thing, then it should bring 07:51.780 --> 07:52.320 into me. 07:58.380 --> 07:59.430 Or I can give 08:02.700 --> 08:06.840 I can simply give I also here, I can run it anyway. 08:06.870 --> 08:08.100 It is completely up to you. 08:08.760 --> 08:16.890 So you can see from one to 1000, 628 and four ninety six had the numbers, which are think in nature. 08:18.300 --> 08:20.370 We have made slight changes. 08:20.610 --> 08:28.640 It was like this, but it needs to be like this because we need to let it run for a while. 08:28.650 --> 08:34.410 We need to let it run for all the numbers from one to the number itself. 08:34.420 --> 08:41.940 And once these factors have been gone through and the sun miscalculated completely, then only the sun 08:41.960 --> 08:42.750 needs to be checked.