1 00:00:00,270 --> 00:00:04,860 All right, let's see how I'm going to solve this particular challenge. 2 00:00:05,380 --> 00:00:05,880 Okay. 3 00:00:05,880 --> 00:00:11,930 So first of all, it says that create a function to find the average of two numbers. 4 00:00:11,940 --> 00:00:18,590 So the first one gives me the name of the function that I'm supposed to use. 5 00:00:18,600 --> 00:00:19,410 So let's go. 6 00:00:19,410 --> 00:00:20,620 So come down here. 7 00:00:20,640 --> 00:00:23,340 My solution to this challenge is this. 8 00:00:24,000 --> 00:00:29,730 Well, the name of my function, let me say function. 9 00:00:29,730 --> 00:00:34,920 Just not fiction, but its function average. 10 00:00:35,590 --> 00:00:43,120 And then I would take in number one and then number two as my parameters. 11 00:00:43,270 --> 00:00:50,890 And in here I would declare const or let's let me select here because I want override the final result. 12 00:00:51,010 --> 00:00:55,450 So I would say my AVG average is equal to. 13 00:00:56,620 --> 00:01:02,970 Nam one plus num two divided by two. 14 00:01:02,980 --> 00:01:05,319 So I need to put them in. 15 00:01:06,760 --> 00:01:08,860 Parentheses like this one because of both. 16 00:01:09,220 --> 00:01:09,550 Right. 17 00:01:09,550 --> 00:01:11,380 But mine's meaning this one. 18 00:01:11,380 --> 00:01:12,190 Let me show you the board. 19 00:01:12,200 --> 00:01:12,910 My technique here. 20 00:01:12,940 --> 00:01:18,490 This is how we can multiply or add operations in a sequential manner. 21 00:01:18,550 --> 00:01:20,620 So you see that B means bracket. 22 00:01:20,620 --> 00:01:24,940 First, you need to handle the bracket first and then of means multiplication. 23 00:01:24,940 --> 00:01:27,730 If there is one, then you go ahead and division. 24 00:01:27,730 --> 00:01:27,990 Okay. 25 00:01:28,060 --> 00:01:30,640 That's why I put them inside like this one divided by two. 26 00:01:30,760 --> 00:01:33,640 Okay, so let's continue. 27 00:01:33,640 --> 00:01:36,130 So if I get that one, if I. 28 00:01:37,030 --> 00:01:41,680 Let me console.log as quickly from this function to avoid just returning the assignment variable like 29 00:01:41,680 --> 00:01:41,920 that. 30 00:01:41,920 --> 00:01:45,670 So let me console.log the results, the average. 31 00:01:46,270 --> 00:01:46,690 Okay. 32 00:01:46,690 --> 00:01:53,320 So if I save this function, let me return to be more precise because you want to write good code. 33 00:01:53,320 --> 00:01:55,480 Okay, let's return the average. 34 00:01:55,900 --> 00:01:56,410 Okay. 35 00:01:56,890 --> 00:02:06,280 So here, if I assigned the results equal to the average, then I pass in my two numbers. 36 00:02:06,280 --> 00:02:11,230 Let's say I want to find average between let's say two and four. 37 00:02:11,260 --> 00:02:15,730 What would be the answer to platform is six over two is going to be three. 38 00:02:15,910 --> 00:02:25,810 So if I console that log the the result like that, let's see in the console. 39 00:02:25,840 --> 00:02:26,890 Yes, indeed. 40 00:02:26,890 --> 00:02:28,510 We have three over here. 41 00:02:28,930 --> 00:02:29,230 Okay. 42 00:02:29,230 --> 00:02:36,130 What about if I provide, let's say something like seven, you see that I get 4.5. 43 00:02:36,130 --> 00:02:39,010 What about if I let's see, two point something like this one. 44 00:02:39,010 --> 00:02:40,570 Let's see the random numbers I get. 45 00:02:40,570 --> 00:02:42,460 We see that I get this one. 46 00:02:42,550 --> 00:02:45,640 And the question is, is that we need to run up to a whole number. 47 00:02:45,640 --> 00:02:48,970 So here we can use map that floor to floor this. 48 00:02:48,970 --> 00:02:56,530 So here I'll use map dot floor and then I'll pass in my average result. 49 00:02:56,830 --> 00:03:01,210 So this one, I will never get a decimal place, okay? 50 00:03:01,240 --> 00:03:07,630 Because this one have run up to some digit or better still, we can also convert this one to whole maybe 51 00:03:07,630 --> 00:03:11,800 two decimal places or one decimal places using to fix. 52 00:03:11,830 --> 00:03:13,630 Okay, so it's up to you. 53 00:03:13,630 --> 00:03:14,590 It's up to you. 54 00:03:14,800 --> 00:03:15,720 So here is I. 55 00:03:15,730 --> 00:03:16,150 Let's check. 56 00:03:16,150 --> 00:03:22,900 What about if I provide, let's say some the first one I want to add, let's say four and then the percent 57 00:03:22,900 --> 00:03:26,470 provide a string, let's say also as let's say two. 58 00:03:27,160 --> 00:03:31,860 Okay, let's see, we're going to be based on what's going through what would be the answer, right? 59 00:03:31,870 --> 00:03:34,330 We are trying to contact this a string. 60 00:03:34,330 --> 00:03:35,650 Right, a string. 61 00:03:35,680 --> 00:03:39,430 So we are trying to four plus two here. 62 00:03:39,460 --> 00:03:41,950 We give me something like this. 63 00:03:41,950 --> 00:03:50,320 According to what we've learned so far, going to be four and two because this course string concatenation. 64 00:03:50,620 --> 00:04:00,100 But if we divide by two, then it'll be undefined or null because how can we divide a number by a string? 65 00:04:00,100 --> 00:04:01,000 By a number. 66 00:04:01,690 --> 00:04:03,340 So let's see the result for this. 67 00:04:03,340 --> 00:04:08,230 So as a programmer, we need to avoid all these issues because we don't trust the user. 68 00:04:08,530 --> 00:04:12,130 So if I save it, you see that it's not a number. 69 00:04:12,340 --> 00:04:14,470 So how can we check for that? 70 00:04:14,470 --> 00:04:22,840 So here, let's say check, check if there are numbers. 71 00:04:24,010 --> 00:04:27,130 And I'm referring to they means my arguments. 72 00:04:27,130 --> 00:04:28,390 They are numbers. 73 00:04:29,520 --> 00:04:32,210 But not bombast, but instead numbers. 74 00:04:32,220 --> 00:04:36,740 So here we check and here you can use the number built in method. 75 00:04:36,750 --> 00:04:45,240 So let's say if again the we pass the the number and then you pass in the number. 76 00:04:45,300 --> 00:04:46,080 Number one. 77 00:04:47,270 --> 00:04:55,070 If indeed it's a number if and you're going to check for two conditions, if two of them are numbers, 78 00:04:55,070 --> 00:05:00,410 then you can go ahead and then display whatever you want or we can go ahead and do our logic. 79 00:05:00,620 --> 00:05:06,110 So here and the same number, then you pass in number two. 80 00:05:07,240 --> 00:05:07,900 Okay. 81 00:05:08,260 --> 00:05:14,800 If that's the case, then if it is true, then we can go ahead and then retain this. 82 00:05:15,190 --> 00:05:19,480 But we can reverse this one, making it as worth, not a number. 83 00:05:19,480 --> 00:05:23,740 So here I can copy this one and put it inside. 84 00:05:23,740 --> 00:05:33,610 Here else I can return a text and say that please provide. 85 00:05:35,010 --> 00:05:35,910 And number. 86 00:05:36,840 --> 00:05:38,850 So let's see, Nancy. 87 00:05:38,850 --> 00:05:39,440 I get what? 88 00:05:39,450 --> 00:05:44,130 Please provide a number, because what I did is not a number. 89 00:05:44,610 --> 00:05:49,050 What about if I make this one as ten and indeed one is string? 90 00:05:49,050 --> 00:05:50,040 Yes, indeed. 91 00:05:50,040 --> 00:05:51,900 We get plays, provide a number. 92 00:05:51,900 --> 00:05:53,580 So it's working. 93 00:05:53,620 --> 00:05:54,510 The next video. 94 00:05:54,540 --> 00:05:56,670 Let's have another coding challenge.