WEBVTT 00:00.890 --> 00:03.830 Hey everyone, I welcome you all to this new module. 00:03.830 --> 00:08.720 So in this module we are going to now learn about the basics of problem solving. 00:09.020 --> 00:14.960 Now in this course, since we are starting from complete scratch and making sure that we are able to 00:14.990 --> 00:20.720 teach you everything from basics to advanced, it is very important to understand about problem solving. 00:20.900 --> 00:21.950 Going forward. 00:21.950 --> 00:25.400 We will be learning about lots of data structures and algorithm. 00:25.400 --> 00:31.220 The final aim of them will be to assist you in solving any particular problem. 00:31.400 --> 00:36.290 Now to start with the problem solving, let us first understand on what flowcharts are. 00:36.560 --> 00:44.540 So flowchart, as you can see on our screen, is a graphical representation of any process system or 00:44.540 --> 00:45.470 an algorithm. 00:45.650 --> 00:49.940 Just like we have some process or let's say system which we follow in our life. 00:49.970 --> 00:54.800 Maybe it can be that simple as waking up in the morning, we first maybe brush our teeth. 00:54.830 --> 00:59.510 Then depending on what time is it, maybe we can go out for a run. 00:59.510 --> 01:07.310 It is all dependent on some particular condition and things are happening one after the other in a flow. 01:07.340 --> 01:07.850 Right. 01:07.850 --> 01:15.920 So that's the basic idea behind flow chart to make sure that our problem we can express in a graphical 01:15.920 --> 01:19.250 representation, which is understandable by everyone. 01:19.340 --> 01:25.310 So it uses symbols and arrow to show the sequence of steps needed to complete a task. 01:25.610 --> 01:26.150 Okay. 01:26.300 --> 01:32.720 Flow charts are useful in visualizing how to solve a problem and make the process easier to follow. 01:32.840 --> 01:39.080 The biggest advantage of flow chart, which I feel is that it is actually understood by each and everyone, 01:39.110 --> 01:39.380 right? 01:39.410 --> 01:45.800 So if you are solving some complex problem, maybe the target audience is, let's say, someone who 01:45.830 --> 01:47.630 don't know anything about programming. 01:47.660 --> 01:51.410 They will also be able to understand the flow of a flowchart. 01:51.410 --> 01:52.790 It is that basics. 01:52.940 --> 02:01.820 I have myself use flow chart to explain complex algorithm or any particular complex process many times 02:01.820 --> 02:02.930 in my companies as well. 02:02.930 --> 02:09.530 So when I worked at Goldman Sachs or my article there, I used to make these flowchart to explain if 02:09.530 --> 02:15.050 I've done anything and make sure each and everyone okay is able to understand the same. 02:15.080 --> 02:19.190 So now let us learn about the components of our flowchart. 02:19.190 --> 02:23.060 So talking about the components the first one is the terminal. 02:23.240 --> 02:26.660 It is the start and the stop of our flowchart. 02:26.690 --> 02:33.080 Just like our day starts when we get up right when we wake up, that is when we will put a terminal. 02:33.110 --> 02:33.410 Okay. 02:33.440 --> 02:38.720 So for the start, similarly when we end our day right, that is also somewhere we are going to put 02:38.720 --> 02:40.100 a terminal that is top. 02:40.400 --> 02:43.550 The next is taking the input and the output. 02:43.640 --> 02:49.550 Now many problem require you to take an input and show the output as well okay. 02:49.550 --> 02:56.120 So in those cases this is the kind of a box which we should make so as to explain visually to anyone 02:56.120 --> 03:02.720 that hey, I am expecting an input here, or this is something which I want to show next one is the 03:02.720 --> 03:03.620 process box. 03:03.650 --> 03:04.940 Again, very important. 03:04.940 --> 03:10.970 Any process which you are doing, any activity that is something which comes under this process box. 03:10.970 --> 03:17.870 So if in programming you are adding to number, you are dividing them or overall any other process. 03:18.290 --> 03:22.760 This process box is where what you want to use moving forward. 03:22.760 --> 03:24.170 We have the decision box. 03:24.260 --> 03:29.030 We have learned about the conditionals, namely the if and the else statement. 03:29.780 --> 03:35.000 Decision box is what is used to explain or to use that particular thing in my flowchart. 03:35.090 --> 03:37.850 In decision box we do something. 03:38.120 --> 03:44.420 If let's say something is true and we do the other thing if that thing is false, okay. 03:44.450 --> 03:47.360 So we are going to see the same in the example as well. 03:47.390 --> 03:51.920 Then next is arrow again to connect each and every of my component. 03:51.950 --> 03:53.990 It is of utmost important. 03:54.140 --> 03:56.090 And the last one is the connector. 03:57.170 --> 04:02.660 Now I will be just showing you an example and giving you a question so that you can brush up your skills. 04:02.690 --> 04:05.130 It is very important to know these basics. 04:05.280 --> 04:07.590 If and when required, you can of course dive. 04:07.620 --> 04:09.840 A deep dive deep into flowchart. 04:09.840 --> 04:16.050 But I believe that once the basics are clear, it is almost self-explanatory because we have been using 04:16.050 --> 04:18.930 these things on and off in every aspect of life. 04:18.960 --> 04:20.460 Okay, great everyone. 04:20.460 --> 04:21.810 So now let us move to a question. 04:21.810 --> 04:26.340 The question says create a flowchart to display maximum of two numbers. 04:26.820 --> 04:27.870 So let us start with this. 04:27.870 --> 04:31.770 Everyone talking about the maximum. 04:31.770 --> 04:33.720 What exactly are we required to do. 04:33.750 --> 04:37.530 First and foremost let us create the start box. 04:38.490 --> 04:42.090 So this signifies that my process has started. 04:43.890 --> 04:49.110 Once I have the start box, then I have to display maximum of two numbers. 04:49.110 --> 04:52.740 That means I will have to take the input of these numbers as well. 04:52.770 --> 04:53.370 Right. 04:53.370 --> 04:58.710 So let me create an arrow and then one minute here. 04:58.710 --> 05:04.290 So we are going to have a input box right. 05:04.890 --> 05:07.950 So let us draw a parallelogram in that way. 05:13.050 --> 05:14.400 So this is one input box. 05:14.400 --> 05:16.530 Everyone let me just remove the extra edges. 05:21.360 --> 05:23.370 Here I can take the input. 05:23.370 --> 05:26.670 So here I can say that hey input. 05:30.810 --> 05:34.260 NUM one okay. 05:34.590 --> 05:39.990 Next moving forward I can just define same overall box right everyone. 05:39.990 --> 05:43.740 So same box just for the input two as well. 05:43.770 --> 05:50.700 So let me copy this and let us just have it after this particular box where this time I am going to 05:50.730 --> 05:54.330 take the input of my second number. 05:55.920 --> 05:58.590 So let us just make it nicely. 05:58.590 --> 05:59.070 Yeah. 05:59.670 --> 06:04.350 So here I can ask for input of number two. 06:04.560 --> 06:05.190 Right. 06:05.490 --> 06:09.600 Once I have both the inputs, I have to now take a decision. 06:09.780 --> 06:17.790 The decision is if number one is bigger, then I have to showcase that if number two is bigger, then 06:17.790 --> 06:19.110 I have to showcase that. 06:19.140 --> 06:20.880 Okay, great. 06:20.880 --> 06:24.330 So let us draw our overall decision box everyone. 06:26.040 --> 06:28.260 This is my decision box. 06:31.770 --> 06:36.060 I have joined this and let's say this particular place we are going. 06:36.090 --> 06:37.290 So let me draw it again. 06:37.440 --> 06:40.950 We are going this path if. 06:43.260 --> 06:52.050 The condition whichever I am saying is going to be true here and I am going the other way around, which 06:52.050 --> 06:56.460 is this particular direction. 06:56.490 --> 06:58.800 If the condition is false. 07:01.470 --> 07:06.420 Now let us write down the condition so the condition can be if number one. 07:07.500 --> 07:09.750 greater than number two. 07:10.140 --> 07:14.220 Right now we know that if one is greater than two. 07:14.250 --> 07:18.090 Let me write it down as one greater than two or less space. 07:18.120 --> 07:18.420 Yeah. 07:18.450 --> 07:20.460 One greater than two. 07:20.550 --> 07:22.620 If it is true, then what we have to do. 07:22.620 --> 07:29.040 Everyone, we have to just showcase the overall first number. 07:29.070 --> 07:29.280 Okay. 07:29.310 --> 07:34.590 So again copying this particular box we will draw the line should be fine. 07:34.590 --> 07:38.970 And let us copy here as well because this is some output again which I have to showcase. 07:39.000 --> 07:39.240 Right. 07:39.270 --> 07:40.620 So let us just draw this. 07:40.740 --> 07:43.380 Similarly let us draw this as well everyone. 07:44.070 --> 07:52.140 And instead of input I just have to make sure that I am able to display this particular number. 07:52.170 --> 07:52.830 Right. 07:52.860 --> 07:59.070 So if one is greater then I will have to show number one. 07:59.520 --> 08:03.930 If two is greater then number two. 08:04.650 --> 08:08.520 This particular decision box is helping me take that decision. 08:08.520 --> 08:10.410 If true, I will go here. 08:10.440 --> 08:12.270 If false, I will go here. 08:12.300 --> 08:12.840 Right. 08:12.840 --> 08:14.730 So let us redraw the arrows. 08:14.730 --> 08:15.390 Just. 08:21.630 --> 08:23.820 So that's the first arrow everyone. 08:26.190 --> 08:29.280 And this is the second arrow right. 08:29.550 --> 08:30.150 Great. 08:30.180 --> 08:34.410 Now once I have the display done I'm done with everything. 08:34.590 --> 08:36.420 Now we should create a connector. 08:37.710 --> 08:39.300 Let's join this connector. 08:43.770 --> 08:50.310 So once we have joined everything, finally I can just end my overall flow. 08:50.520 --> 08:50.730 Right? 08:50.760 --> 08:53.160 So this is how we are going to create a flow chart. 08:55.470 --> 08:56.190 Stop. 08:58.200 --> 09:05.850 Just have to make sure that we are using the correct components and doing the basic overall all the 09:05.850 --> 09:07.740 process in these flow chart. 09:07.770 --> 09:10.620 Now there can be a lot complex as well, right? 09:10.890 --> 09:15.510 They can be at a level where any complex problem can also be solved using a flow chart. 09:15.510 --> 09:18.540 So we can draw the flow chart for complexes of the problem. 09:18.540 --> 09:19.800 That is not a problem. 09:19.830 --> 09:25.020 Now, what I want all of you to do now is you have got the basic idea of this. 09:25.050 --> 09:27.570 We already have done lots about the python. 09:27.570 --> 09:33.210 So once we have understood all these things, what I want to do now is to create this flow chart where 09:33.210 --> 09:35.520 you will be adding two numbers. 09:35.520 --> 09:38.340 So you have to create a flow chart to add two numbers. 09:38.520 --> 09:41.160 Again the overall idea is going to be a lot same. 09:41.160 --> 09:43.080 We will start by taking the input. 09:43.110 --> 09:45.090 We will start by taking the second input. 09:45.120 --> 09:49.770 Here the process box will come into picture because adding is some process, right. 09:49.830 --> 09:56.340 Once you have added the same, we just have to display that out using the input or output box and then 09:56.340 --> 09:57.120 stop our flow. 09:57.120 --> 09:59.010 So no decision is going to be there. 09:59.010 --> 10:05.190 That is how we can normally use flow chart, something you should have a good idea about while starting 10:05.190 --> 10:05.520 your journey. 10:05.520 --> 10:07.230 About the problem solving. 10:07.260 --> 10:08.700 Okay, so great everyone! 10:08.700 --> 10:09.990 Now let us meet in the next video.