1 00:00:01,060 --> 00:00:02,650 Hey, guys, what's up? 2 00:00:03,280 --> 00:00:06,400 So today we will solve one problem, one function. 3 00:00:07,120 --> 00:00:11,440 So the question is right to function. 4 00:00:15,540 --> 00:00:16,140 Would kick. 5 00:00:18,620 --> 00:00:19,310 If I no. 6 00:00:22,010 --> 00:00:22,970 If a number is. 7 00:00:25,290 --> 00:00:26,610 Prime are not. 8 00:00:28,320 --> 00:00:28,580 OK. 9 00:00:28,890 --> 00:00:36,120 So we have to write a function and that function will check if the given number is prime or not. 10 00:00:37,780 --> 00:00:40,330 So how do we check with our number is prime or not? 11 00:00:40,720 --> 00:00:46,780 We will start dividing from two bill and minus one in between these numbers. 12 00:00:47,110 --> 00:00:51,220 If I find any number, if I find just anyone number. 13 00:00:51,820 --> 00:00:52,640 Just any one. 14 00:00:52,800 --> 00:00:53,140 Number. 15 00:00:54,960 --> 00:00:59,700 That divides and that means that number is not prime. 16 00:01:02,660 --> 00:01:12,360 If they were to find any one number in this range that divides and then the number is blame. 17 00:01:14,150 --> 00:01:14,390 OK. 18 00:01:15,780 --> 00:01:19,800 So our aim is to find just one number that divides. 19 00:01:19,830 --> 00:01:24,330 And if we are able to find our frame as prime. 20 00:01:25,630 --> 00:01:27,490 So we have to write the function. 21 00:01:36,410 --> 00:01:37,400 So let's name it. 22 00:01:37,940 --> 00:01:38,540 Function. 23 00:01:40,840 --> 00:01:44,350 Czech Prime Nazi P.P.. 24 00:01:53,690 --> 00:01:54,440 So let's see. 25 00:01:54,500 --> 00:02:00,130 My number is in, let's say the number that we have to check will be given by user. 26 00:02:00,740 --> 00:02:02,270 And now what we have to do. 27 00:02:02,900 --> 00:02:04,890 I will write a function is prime. 28 00:02:05,720 --> 00:02:10,510 So if suppose I will function is prime. 29 00:02:12,650 --> 00:02:14,850 So what is parameter take as input. 30 00:02:15,230 --> 00:02:17,360 It will take a number as input. 31 00:02:18,170 --> 00:02:21,740 So if its frame is returning through that means. 32 00:02:21,770 --> 00:02:23,240 My number is frame. 33 00:02:23,720 --> 00:02:24,500 I will print. 34 00:02:24,910 --> 00:02:25,600 See out. 35 00:02:26,930 --> 00:02:27,350 Frame. 36 00:02:31,210 --> 00:02:37,570 And if this function or done falls, that means my number is not fame. 37 00:02:45,410 --> 00:02:49,250 OK, so we have to implement this is prime function. 38 00:02:54,440 --> 00:02:58,430 So they don't type is Moule if they're the modest frame. 39 00:02:58,460 --> 00:03:01,250 I will know if the given number is not prime. 40 00:03:01,340 --> 00:03:02,260 I will return false. 41 00:03:03,140 --> 00:03:04,880 So Boole is there done type of. 42 00:03:06,380 --> 00:03:07,130 Is frame. 43 00:03:09,290 --> 00:03:11,330 It will take a number as input. 44 00:03:11,480 --> 00:03:12,040 So end. 45 00:03:12,590 --> 00:03:13,990 Let's call this number N. 46 00:03:19,410 --> 00:03:20,550 So what do we have to do? 47 00:03:21,030 --> 00:03:25,120 I will start dividing the number from two so far. 48 00:03:25,170 --> 00:03:27,040 And I close too. 49 00:03:28,110 --> 00:03:33,000 I have to go to Bill and minus when I bless Bliss. 50 00:03:33,810 --> 00:03:35,790 So if I am able. 51 00:03:36,150 --> 00:03:45,840 So if I am able to find just one single number that divides in letters is if and Maude I that is if 52 00:03:45,840 --> 00:03:46,910 I do weights in. 53 00:03:50,310 --> 00:03:55,390 So my number is not frame. 54 00:03:55,500 --> 00:03:57,150 So I will return false. 55 00:03:58,500 --> 00:03:58,730 OK. 56 00:04:01,570 --> 00:04:06,960 So if I divide and that means my number is not prime. 57 00:04:07,690 --> 00:04:09,430 And I can return false. 58 00:04:11,980 --> 00:04:14,560 Now when will I reach line number eleven? 59 00:04:15,850 --> 00:04:19,660 So when this full look will terminate, I will reach line number eleven. 60 00:04:20,070 --> 00:04:20,340 OK. 61 00:04:20,680 --> 00:04:24,160 So when this little will dominate, I will reach line number eleven. 62 00:04:24,790 --> 00:04:27,100 So if this loop terminate, what is the meaning? 63 00:04:28,030 --> 00:04:30,220 This means that the number is prime. 64 00:04:30,400 --> 00:04:33,070 I am not able to find just one number that divides. 65 00:04:33,100 --> 00:04:37,030 And so I can return through. 66 00:04:40,360 --> 00:04:42,930 OK, so let's start program. 67 00:04:49,480 --> 00:04:51,010 Let's say the given number is two. 68 00:04:52,870 --> 00:04:54,130 So, too, is prime. 69 00:04:58,050 --> 00:04:58,510 Let's see. 70 00:04:58,570 --> 00:04:59,770 My number is seven. 71 00:05:00,520 --> 00:05:02,040 So seven is also prime. 72 00:05:03,820 --> 00:05:04,630 And let's see. 73 00:05:04,750 --> 00:05:06,220 My number is Ford. 74 00:05:06,880 --> 00:05:08,340 So Ford is not prime. 75 00:05:10,080 --> 00:05:10,370 OK. 76 00:05:11,410 --> 00:05:12,510 So this is how it is. 77 00:05:12,530 --> 00:05:20,200 Plugging bull is the return type is Plame is the name of the function and his barometer or Ganzi argument. 78 00:05:20,770 --> 00:05:24,350 So if any number divides and it unfolds. 79 00:05:24,490 --> 00:05:25,420 Number is not Plame. 80 00:05:25,540 --> 00:05:28,960 Otherwise you can say if Lyttleton true number is Plame. 81 00:05:29,620 --> 00:05:32,850 And here I am checking if is Plame is returning true. 82 00:05:32,920 --> 00:05:34,330 That means my number is Plame. 83 00:05:34,720 --> 00:05:35,760 So I am bringing crime. 84 00:05:36,060 --> 00:05:38,230 Otherwise I will print not brain. 85 00:05:40,650 --> 00:05:40,950 OK. 86 00:05:43,090 --> 00:05:44,260 So this is it for this video. 87 00:05:44,410 --> 00:05:46,090 If you have any doubt, you can ask me. 88 00:05:46,480 --> 00:05:46,980 Thank you.