1 00:00:01,610 --> 00:00:03,260 Hey, guys, what's up? 2 00:00:03,800 --> 00:00:08,000 So in the last class, we learned about four loops, and I told you that. 3 00:00:09,190 --> 00:00:12,880 We will solve some problems with the help of follows to get a better understanding. 4 00:00:13,120 --> 00:00:14,320 So this is the first problem. 5 00:00:14,560 --> 00:00:16,090 So the problem statement is very simple. 6 00:00:16,120 --> 00:00:21,760 We just have to multiply two numbers, but without multiplying them, without multiplying them means 7 00:00:21,880 --> 00:00:23,740 you cannot write A multiplier by B. 8 00:00:23,770 --> 00:00:24,550 So this is wrong. 9 00:00:25,240 --> 00:00:26,860 But you have to multiply the numbers. 10 00:00:27,280 --> 00:00:32,950 So we all know that image by baby is him as addition of a B times. 11 00:00:34,170 --> 00:00:34,410 OK. 12 00:00:34,720 --> 00:00:37,070 So if you want someone to bear to multiply by three. 13 00:00:37,120 --> 00:00:39,070 So this is two plus two plus two. 14 00:00:39,470 --> 00:00:42,130 That is added to three number of times. 15 00:00:42,220 --> 00:00:42,850 So six. 16 00:00:43,530 --> 00:00:43,740 OK. 17 00:00:44,080 --> 00:00:47,860 So you multiply by B's same as add a B times. 18 00:00:48,280 --> 00:00:52,080 So I need a loop and this loop will run B times. 19 00:00:52,690 --> 00:00:54,880 So each time this loop is running, what I will do. 20 00:00:54,910 --> 00:00:56,290 I will maintain a variable sum. 21 00:00:56,530 --> 00:00:57,880 And I will do some equals. 22 00:00:57,970 --> 00:00:58,780 Some Plessey. 23 00:00:59,350 --> 00:00:59,600 OK. 24 00:00:59,830 --> 00:01:02,290 So this problem can easily be solved by via loop. 25 00:01:02,590 --> 00:01:05,140 And this problem can easily be solved by a for loop. 26 00:01:05,380 --> 00:01:10,570 But I will solve this problem with the help of for loop so that you get a better understanding of how 27 00:01:10,570 --> 00:01:13,990 for Lookbook we have done enough number of Papis on y loop. 28 00:01:14,050 --> 00:01:17,110 Now this is the time for practicing a little bit of for loop. 29 00:01:17,880 --> 00:01:18,120 OK. 30 00:01:18,490 --> 00:01:19,930 So I think you understand the logic. 31 00:01:20,280 --> 00:01:21,550 So logic is very simple. 32 00:01:21,910 --> 00:01:26,920 For example, if you want to multiply two into five, what you will do, you will add two to five times 33 00:01:26,920 --> 00:01:28,540 as two plus two plus two plus two. 34 00:01:28,930 --> 00:01:30,360 So this is 10. 35 00:01:30,820 --> 00:01:34,330 Similarly, if you want to multiply B eight, multiply baby. 36 00:01:34,360 --> 00:01:34,930 What do will. 37 00:01:35,890 --> 00:01:37,420 You will do something like this. 38 00:01:37,960 --> 00:01:38,650 Eight plus eight plus. 39 00:01:38,650 --> 00:01:39,670 Say how many times. 40 00:01:39,700 --> 00:01:40,930 B times. 41 00:01:41,380 --> 00:01:41,610 OK. 42 00:01:41,860 --> 00:01:43,240 So what is multiplication. 43 00:01:43,570 --> 00:01:45,270 Multiplication is actually nothing. 44 00:01:45,340 --> 00:01:49,840 Multiplication is actually anything we can call it as it is repetitive. 45 00:01:50,620 --> 00:01:52,750 It is repetitive addition. 46 00:01:54,420 --> 00:01:55,550 So multiplication is nothing. 47 00:01:55,690 --> 00:01:58,200 It is just repetitive additions. 48 00:01:58,840 --> 00:02:00,490 So our logic is very simple. 49 00:02:00,670 --> 00:02:06,500 I run a loop been a matter of times and each time you are running a loop, we will mention a variable 50 00:02:06,510 --> 00:02:08,560 sum added to the variable sum. 51 00:02:08,890 --> 00:02:09,110 OK. 52 00:02:09,520 --> 00:02:11,250 So now where does all this problem? 53 00:02:12,360 --> 00:02:14,490 So let's hear the name of this is. 54 00:02:16,320 --> 00:02:19,340 So what should we name it, multiply? 55 00:02:21,390 --> 00:02:25,380 So we are naming it multiply, not CBB. 56 00:02:44,180 --> 00:02:45,530 So what we have to do first. 57 00:02:45,650 --> 00:02:52,580 I will take in a motel, then put slatted in a Mazari and we will give us the valley of envy and we 58 00:02:52,580 --> 00:02:53,910 have to work to play in the valley of. 59 00:02:54,020 --> 00:02:55,790 And be lucky. 60 00:02:56,300 --> 00:02:57,380 So what I need. 61 00:02:57,470 --> 00:02:58,220 I need a loop. 62 00:02:58,280 --> 00:03:05,150 And first of all, I need some initialism will be zero if you will not initialize the sum will contain 63 00:03:05,150 --> 00:03:07,250 garbage value and the output will be wrong. 64 00:03:07,640 --> 00:03:09,620 So initiation of some is very important. 65 00:03:10,010 --> 00:03:10,820 Not the for loop. 66 00:03:11,240 --> 00:03:12,770 How many times we have to run this loop. 67 00:03:12,830 --> 00:03:14,300 We have to run this loop B times. 68 00:03:14,360 --> 00:03:15,020 So I equals. 69 00:03:15,320 --> 00:03:20,590 So I equals when I last 10 articles to be a plus plus. 70 00:03:21,950 --> 00:03:22,650 What do you do. 71 00:03:23,180 --> 00:03:26,350 You will add the value of a two sum. 72 00:03:26,660 --> 00:03:27,900 So some equals simplicity. 73 00:03:28,400 --> 00:03:31,310 And finally you will print the value of some. 74 00:03:31,760 --> 00:03:34,460 Now how to check whether my output respect or not. 75 00:03:35,210 --> 00:03:35,900 What will I do? 76 00:03:35,990 --> 00:03:39,590 I will also print C out in to B. 77 00:03:40,770 --> 00:03:41,110 Okay. 78 00:03:41,660 --> 00:03:45,380 So now let's see whether our logic is correct or not. 79 00:03:48,600 --> 00:03:51,110 Let's say the first number, the well, your face 20. 80 00:03:51,660 --> 00:03:53,290 And my second number is. 81 00:03:53,760 --> 00:03:55,010 Let's see if I have 24. 82 00:03:56,220 --> 00:03:56,610 So. 83 00:03:57,740 --> 00:03:58,260 Our our. 84 00:03:58,620 --> 00:03:59,040 Correct. 85 00:03:59,160 --> 00:04:00,450 So one zero four zero. 86 00:04:01,110 --> 00:04:02,880 So the first one is due to some. 87 00:04:02,910 --> 00:04:05,020 And the second one is due to a multiplier baby. 88 00:04:05,780 --> 00:04:07,770 So our court is hundred percent correct. 89 00:04:08,220 --> 00:04:10,920 You can also implement this with the help of my loop. 90 00:04:11,400 --> 00:04:13,830 So what do we do if we want to use VI loopier? 91 00:04:15,210 --> 00:04:16,530 So our logic is very simple. 92 00:04:17,130 --> 00:04:22,780 You will, right, and I quote one while now you will read the condition. 93 00:04:22,800 --> 00:04:25,050 Condition is listed in articles to be. 94 00:04:25,620 --> 00:04:29,410 You will add some because some plus eight. 95 00:04:30,000 --> 00:04:31,990 And then you will write a plus plus. 96 00:04:32,870 --> 00:04:34,560 OK, so this is my condition. 97 00:04:35,400 --> 00:04:36,480 This is my condition. 98 00:04:37,200 --> 00:04:38,670 This is my initialization. 99 00:04:39,150 --> 00:04:40,770 This is my initialization. 100 00:04:42,990 --> 00:04:44,040 This is my condition. 101 00:04:44,100 --> 00:04:46,290 And finally, this is my condition. 102 00:04:46,800 --> 00:04:47,940 Sorry, this was subdued. 103 00:04:49,350 --> 00:04:51,480 This was update and this is update. 104 00:04:52,890 --> 00:04:53,160 OK. 105 00:04:54,530 --> 00:05:00,980 So the principle behind the working off fall of NY Loop is exactly same, when the next we do, we will 106 00:05:00,980 --> 00:05:03,680 solve one more question to get a better understanding or for loop. 107 00:05:04,020 --> 00:05:04,260 OK. 108 00:05:04,580 --> 00:05:05,480 So this is it for this. 109 00:05:05,480 --> 00:05:07,340 We know if you have any doubt, feel free to ask. 110 00:05:07,400 --> 00:05:07,970 Thank you.