WEBVTT 1 00:00:00.480 --> 00:00:01.620 Okay, hopefully, 2 00:00:01.620 --> 00:00:06.620 you managed to complete at least point 1 and point 2. 3 00:00:06.630 --> 00:00:09.840 And so let's start by solving these two. 4 00:00:09.840 --> 00:00:14.760 So number one is calculating the average of both teams. 5 00:00:14.760 --> 00:00:17.673 So let's create one variable for each. 6 00:00:19.647 --> 00:00:23.400 So scoreDolphins, and so to calculate the average, 7 00:00:23.400 --> 00:00:25.620 we simply add up all the three scores 8 00:00:25.620 --> 00:00:27.480 and then divide it by a three. 9 00:00:27.480 --> 00:00:29.763 So we already did something similar before. 10 00:00:30.690 --> 00:00:35.690 So that's 96 + 108 + 89, 11 00:00:37.170 --> 00:00:39.330 and then divide it by 3. 12 00:00:39.330 --> 00:00:41.010 And we need these parenthesis 13 00:00:41.010 --> 00:00:44.760 so that these plus operations are executed first, 14 00:00:44.760 --> 00:00:47.910 because the grouping, so the parenthesis, 15 00:00:47.910 --> 00:00:49.593 have a higher precedence. 16 00:00:50.460 --> 00:00:55.460 Okay, scoreKoalas is 88 + 91 + 110, 17 00:01:00.540 --> 00:01:02.313 and again, divide it by 3. 18 00:01:03.840 --> 00:01:07.833 And now let's quickly log both to the console here, 19 00:01:09.150 --> 00:01:12.063 scoreDolphins and scoreKoalas. 20 00:01:17.568 --> 00:01:19.500 Okay, so they're pretty close, 21 00:01:19.500 --> 00:01:23.670 but the dolphins have a little bit higher of an average. 22 00:01:23.670 --> 00:01:27.420 And so that's what we're working on in point 2, 23 00:01:27.420 --> 00:01:31.500 where we're gonna compare the average of both teams. 24 00:01:31.500 --> 00:01:36.420 So we are gonna use an 'if' statement 25 00:01:37.290 --> 00:01:38.793 or 'if else' probably. 26 00:01:39.840 --> 00:01:43.773 So scoreDolphins, if it's greater than scoreKoalas, 27 00:01:48.000 --> 00:01:52.180 then log to the console 'Dolphins win the trophy.' 28 00:01:56.610 --> 00:01:59.193 And we can get fancy here with some emoji. 29 00:02:01.500 --> 00:02:03.150 Let's see if we got one up, 30 00:02:03.150 --> 00:02:05.220 that's the one I'm looking for. 31 00:02:05.220 --> 00:02:07.020 But of course, once more, 32 00:02:07.020 --> 00:02:09.873 you don't need to worry about this part. 33 00:02:10.740 --> 00:02:12.753 Let's just copy this for the next one. 34 00:02:13.770 --> 00:02:15.660 So 'else,' and actually, 35 00:02:15.660 --> 00:02:19.290 we're going to use an 'else if' because of the draw, 36 00:02:19.290 --> 00:02:21.453 but let's talk about that one later. 37 00:02:22.860 --> 00:02:27.860 So if the score of the koalas is greater than scoreDolphins, 38 00:02:28.440 --> 00:02:31.080 then we're gonna print the opposite 39 00:02:31.080 --> 00:02:34.113 so that koalas win the trophy. 40 00:02:34.980 --> 00:02:37.137 And finally, 'else if,' 41 00:02:39.076 --> 00:02:42.653 scoreDolphins is equal to scoreKoalas, 42 00:02:44.040 --> 00:02:49.040 then we can simply say that no one wins the trophy, 43 00:02:52.050 --> 00:02:57.003 or actually, both win the trophy. 44 00:02:59.970 --> 00:03:02.910 Okay, so let's test that. 45 00:03:02.910 --> 00:03:06.210 And indeed, we get that the dolphins win the trophy, 46 00:03:06.210 --> 00:03:10.590 and that's because, as we know, this value is greater. 47 00:03:10.590 --> 00:03:12.300 And so actually, this first condition here 48 00:03:12.300 --> 00:03:14.400 turns out to be true right away. 49 00:03:14.400 --> 00:03:17.283 And so this block of code here gets executed. 50 00:03:18.150 --> 00:03:19.770 Now, let's just quickly increase 51 00:03:19.770 --> 00:03:22.200 the score of the koalas here, 52 00:03:22.200 --> 00:03:27.200 let's say 100, just to see if the second part also works. 53 00:03:29.280 --> 00:03:32.850 And indeed, now the koalas win the trophy. 54 00:03:32.850 --> 00:03:34.623 Okay, but let's put it back here. 55 00:03:35.520 --> 00:03:40.230 And here you could have actually done it in another way. 56 00:03:40.230 --> 00:03:45.230 So you could have done scoreDolphins less than scoreKoalas. 57 00:03:45.930 --> 00:03:47.730 So, basically, write the same as here, 58 00:03:47.730 --> 00:03:51.660 but instead of the greater, you would've used the less than. 59 00:03:51.660 --> 00:03:53.340 So that's the exact same thing, 60 00:03:53.340 --> 00:03:56.280 and both are equally valid. 61 00:03:56.280 --> 00:03:57.930 Then here in the last part, 62 00:03:57.930 --> 00:04:01.350 actually, we wouldn't even have needed this part, 63 00:04:01.350 --> 00:04:05.010 so that the score of dolphins is equal to score of koalas, 64 00:04:05.010 --> 00:04:08.040 because that's actually the only scenario that's left 65 00:04:08.040 --> 00:04:10.263 given these previous two conditions. 66 00:04:11.160 --> 00:04:14.070 So basically, if none of these here were true, 67 00:04:14.070 --> 00:04:15.660 really the only thing possible 68 00:04:15.660 --> 00:04:17.580 would be that they had the same score. 69 00:04:17.580 --> 00:04:21.630 And so a simple 'else' block would've been enough here. 70 00:04:21.630 --> 00:04:24.300 But anyway, this works just fine too. 71 00:04:24.300 --> 00:04:28.470 And so, again, what matters is that you made it work 72 00:04:28.470 --> 00:04:30.720 even if you did some things differently. 73 00:04:30.720 --> 00:04:33.000 For example, you could have stored the conditions 74 00:04:33.000 --> 00:04:35.310 in separate bullion variables, 75 00:04:35.310 --> 00:04:38.280 or you could have structured the 'if else' statement 76 00:04:38.280 --> 00:04:39.720 in some different way. 77 00:04:39.720 --> 00:04:42.090 But if you got the same result that we just saw here, 78 00:04:42.090 --> 00:04:43.680 then congratulations, 79 00:04:43.680 --> 00:04:46.743 that's a great work, well done, really. 80 00:04:48.439 --> 00:04:52.500 So maybe you even made it to Bonus number 1 and 2. 81 00:04:52.500 --> 00:04:56.100 And so let me solve them here now as well. 82 00:04:56.100 --> 00:04:59.613 So let's start by calculating the average. 83 00:05:05.280 --> 00:05:07.383 So this is gonna be Bonus 1, 84 00:05:09.067 --> 00:05:12.063 and yeah, let's copy this one too, 85 00:05:13.410 --> 00:05:16.500 let's copy this one, let's copy this one, 86 00:05:16.500 --> 00:05:18.750 so should have done it all in one go, 87 00:05:18.750 --> 00:05:21.933 so that we can now comment out this first part. 88 00:05:24.947 --> 00:05:28.980 So for test number 1, this should be 97. 89 00:05:28.980 --> 00:05:33.007 Then the second one should be 112 and 101. 90 00:05:35.010 --> 00:05:36.780 And for the koalas, 91 00:05:36.780 --> 00:05:41.463 we have 109, 95, and 123. 92 00:05:47.040 --> 00:05:48.990 Let's just quickly test. 93 00:05:48.990 --> 00:05:51.870 And so right now, the koalas win the trophy. 94 00:05:51.870 --> 00:05:54.060 So for now, everything works the same, 95 00:05:54.060 --> 00:05:57.870 but now we need to include this important condition here, 96 00:05:57.870 --> 00:06:00.270 which is that, with this rule, 97 00:06:00.270 --> 00:06:02.670 a team only wins if it has a higher score 98 00:06:02.670 --> 00:06:05.070 than the other team, which we already have, 99 00:06:05.070 --> 00:06:08.763 and at the same time, a score of at least 100 points. 100 00:06:10.140 --> 00:06:12.273 Okay, easy enough. 101 00:06:13.560 --> 00:06:17.670 So in this case, the dolphins win, okay? 102 00:06:17.670 --> 00:06:19.710 But now we also need to ensure 103 00:06:19.710 --> 00:06:23.040 that the dolphins have a score higher or equal 100. 104 00:06:23.040 --> 00:06:24.543 So let's just say that. 105 00:06:26.520 --> 00:06:29.730 So dolphins need to have a higher score than koalas, 106 00:06:29.730 --> 00:06:34.730 and scoreDolphins need to be greater or equal 100, 107 00:06:36.720 --> 00:06:40.770 and that's it, that's all we need for this requirement. 108 00:06:40.770 --> 00:06:43.140 And then the same thing here. 109 00:06:43.140 --> 00:06:46.170 So this is the scenario where the koalas win. 110 00:06:46.170 --> 00:06:47.760 So for the koalas to win, 111 00:06:47.760 --> 00:06:50.790 they need to have a higher score than the dolphins, 112 00:06:50.790 --> 00:06:55.790 and at the same time, they need to have at least 100 points, 113 00:06:56.160 --> 00:07:00.930 so just like before, greater or equal 100. 114 00:07:00.930 --> 00:07:03.990 And so once more, we used a logical operator here 115 00:07:03.990 --> 00:07:07.253 to model this situation essentially, okay? 116 00:07:09.390 --> 00:07:11.100 And actually, I think, with this, 117 00:07:11.100 --> 00:07:15.363 we implemented this bonus number 1. 118 00:07:17.334 --> 00:07:19.080 So let's try that again. 119 00:07:19.080 --> 00:07:21.080 And right now, of course, it still works 120 00:07:21.960 --> 00:07:25.740 because both have a score higher than 100. 121 00:07:25.740 --> 00:07:27.600 But let's change that now here, 122 00:07:27.600 --> 00:07:32.600 according to test data 2, to 106, so 106, 123 00:07:36.960 --> 00:07:39.660 and now they both win the trophy. 124 00:07:39.660 --> 00:07:44.660 So let's actually decrease all of these points by 20. 125 00:07:45.900 --> 00:07:50.283 So let's make it 81 and 86. 126 00:07:51.210 --> 00:07:55.140 So the average should still be the same now, yeah, 127 00:07:55.140 --> 00:07:57.420 but they're both below 100 now. 128 00:07:57.420 --> 00:08:01.140 And so this brings us to bonus number 2 129 00:08:01.140 --> 00:08:02.700 that says that the minimum score 130 00:08:02.700 --> 00:08:05.040 should also apply to a draw. 131 00:08:05.040 --> 00:08:09.420 So a draw only happens when both teams have the same score 132 00:08:09.420 --> 00:08:14.160 and both a score greater or equal 100 points, okay? 133 00:08:14.160 --> 00:08:16.470 And otherwise, no team wins the trophy, 134 00:08:16.470 --> 00:08:17.670 so that's important too. 135 00:08:19.320 --> 00:08:21.990 So let's translate that. 136 00:08:21.990 --> 00:08:24.600 So to be a draw, the score needs to be the same, 137 00:08:24.600 --> 00:08:26.010 which we already have, 138 00:08:26.010 --> 00:08:31.010 and the score of dolphins 139 00:08:31.080 --> 00:08:33.753 needs to be greater or equal 100, 140 00:08:34.620 --> 00:08:39.000 and the score of koalas 141 00:08:39.000 --> 00:08:42.953 needs to be greater, equal 100, okay? 142 00:08:45.502 --> 00:08:50.502 And else, well, then we can say that no one wins the trophy. 143 00:08:58.590 --> 00:09:03.590 And let's just add some sad emoji here. (chuckling) 144 00:09:05.838 --> 00:09:08.550 Okay, let's try that. 145 00:09:08.550 --> 00:09:13.110 And now we get that no one wins the trophy, okay? 146 00:09:13.110 --> 00:09:17.520 So that's because their scores are now below 100. 147 00:09:17.520 --> 00:09:21.600 And so we actually enter this last case here. 148 00:09:21.600 --> 00:09:24.660 But if we go back to the averages that we had before, 149 00:09:24.660 --> 00:09:29.660 so 106 and 101, let's see, 150 00:09:30.840 --> 00:09:32.790 and now both win the trophy 151 00:09:32.790 --> 00:09:35.310 because they have the same amount of points 152 00:09:35.310 --> 00:09:39.780 and they both have a number of points above 100. 153 00:09:39.780 --> 00:09:42.120 And so that's exactly what we have here. 154 00:09:42.120 --> 00:09:47.120 So same points, dolphins have over or at least 100 points 155 00:09:47.880 --> 00:09:50.700 and koalas have at least 100 points. 156 00:09:50.700 --> 00:09:53.253 And so in this case, both win the trophy. 157 00:09:54.960 --> 00:09:57.010 Finally, let's also test the scenario 158 00:09:58.080 --> 00:10:00.480 in which both have below, 159 00:10:00.480 --> 00:10:03.720 but the dolphins have a little bit more. 160 00:10:03.720 --> 00:10:05.283 Let's put this one here at 80. 161 00:10:06.330 --> 00:10:11.330 And so, now we see that the dolphins have 96 points 162 00:10:11.700 --> 00:10:15.330 and the koalas have 84, but still, no one wins the trophy. 163 00:10:15.330 --> 00:10:19.980 And that's because the dolphins have more than the koalas. 164 00:10:19.980 --> 00:10:22.650 So this part of the requirement is true, 165 00:10:22.650 --> 00:10:25.890 but they do not have over 100. 166 00:10:25.890 --> 00:10:28.620 So this part here is false, okay? 167 00:10:28.620 --> 00:10:32.250 And so true, this first part here is true, 168 00:10:32.250 --> 00:10:33.600 and the second part is false, 169 00:10:33.600 --> 00:10:36.180 and true and false gives false. 170 00:10:36.180 --> 00:10:38.730 And so then, all of these are skipped 171 00:10:38.730 --> 00:10:41.073 because they're also, obviously, false. 172 00:10:42.999 --> 00:10:45.990 And so we go straight to this last block, 173 00:10:45.990 --> 00:10:47.610 and so no one wins the trophy, 174 00:10:47.610 --> 00:10:50.610 which is exactly what we were expecting 175 00:10:50.610 --> 00:10:53.310 as a result here, okay? 176 00:10:53.310 --> 00:10:55.260 Now, if you didn't manage to do this here, 177 00:10:55.260 --> 00:10:57.480 again, don't worry, because I know 178 00:10:57.480 --> 00:10:59.700 that this is a little bit complicated already. 179 00:10:59.700 --> 00:11:01.830 And so, in case you managed 180 00:11:01.830 --> 00:11:04.350 to successfully complete this challenge, 181 00:11:04.350 --> 00:11:08.580 then a huge congratulations to you, well done. 182 00:11:08.580 --> 00:11:10.200 But if, for some reason, 183 00:11:10.200 --> 00:11:12.750 you were not able to complete the challenge, 184 00:11:12.750 --> 00:11:15.690 then don't worry all too much about it. 185 00:11:15.690 --> 00:11:18.030 You can always go back to the lectures 186 00:11:18.030 --> 00:11:20.940 where we first learned about these topics. 187 00:11:20.940 --> 00:11:23.580 And you can, of course, after this video, 188 00:11:23.580 --> 00:11:26.280 also review the code a little bit more carefully 189 00:11:26.280 --> 00:11:29.610 to make sure 100% that you understand, 190 00:11:29.610 --> 00:11:34.260 especially this last example that we just worked on, okay? 191 00:11:34.260 --> 00:11:37.560 But anyway, great job in completing this challenge, 192 00:11:37.560 --> 00:11:40.323 and now I see you in the next video.