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I hope you're excited 2

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for your next coding challenge 3

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so let's jump right in. 4

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And this time we have a different coding challenge. 5

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So, this time we have two gymnastics teams 6

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called the Dolphins and the Koalas. 7

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And they compete against each other three times, 8

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then the team with the highest ever score 9

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is the winner and wins a trophy. 10

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So here are your tasks. 11

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First, you should calculate the average score 12

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for each of the teams using the test data below. 13

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So, this test data right here, okay. 14

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Then compare the teams' average scores 15

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to determine the winner of the competition 16

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and also print it to the console. 17

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Now there might be a draw between the teams 18

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which means that they have the same average score. 19

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So, you need to test for that situation as well. 20

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So this is the basic challenge 21

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and I think this will be great to test the knowledge 22

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that you gained over the last couple of videos. 23

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Now if you want to take it to the next level 24

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and make it a little more difficult, 25

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you can try out the bonus one and bonus two. 26

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So, let's take a look at this. 27

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So, bonus one is to include the requirement 28

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for a minimum score of 100. 29

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So what this means is that the team only wins 30

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if it has a higher score than the other team. 31

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And, at the same time a score of at least 100 points. 32

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And to help you solve this one, 33

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I'm giving you the hint of using a logical operator 34

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to test for the minimum score of 100 points. 35

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Also, you will also probably need multiple else if blocks. 36

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All right. 37

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Now the second bonus here, 38

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is that the minimum score also applies to a draw. 39

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So a draw only happens when both teams have the same score 40

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and both have a score greater or equal 100 points. 41

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And otherwise no team at all wins the trophy, all right. 42

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And then here you actually have the test data for bonus one 43

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and for bonus two. 44

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And you can of course play around with these scores 45

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and change them to match all the different scenarios, okay. 46

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So these are not static, 47

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they're just some initial values that make sense 48

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but from there feel free to change them. 49

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So the first two are the easier ones 50

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and for these you use this test data. 51

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Then to make it a bit more difficult 52

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you can do bonus two and bonus one 53

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and for that you use these two test data sets, all right? 54

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Now if one of the bonuses turns out to be too hard for you 55

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then just don't do it. 56

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It's perfectly fine, okay. 57

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What matters is that you don't become frustrated. 58

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The goal here is really just to test the stuff 59

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that we did before 60

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and absolutely not to get you frustrated 61

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and thinking that coding might not be for you, okay. 62

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And again, don't focus on writing efficient 63

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or optimized code at this point, 64

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all we want here is to learn programming 65

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and to learn JavaScript. 66

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So, just make it work and, yeah... 67

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That's it for instructions about this challenge. 68

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So, pause the video now and I see you in a second. 69

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Now okay, hopefully you managed to complete 70

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at least point one and point two 71

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and so let's start by solving these two. 72

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So, number one is calculating the average of both teams. 73

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So let's create one variable for each. 74

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So, score Dolphins 75

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and so to calculate the average 76

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we simply add up all the three scores 77

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and then divide it by 3. 78

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So we already did something similar before 79

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so that's 96 plus 108 plus 89, 80

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and then divided by three. 81

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And we need these parentheses 82

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so that these plus operations are executed first. 83

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Because the grouping... 84

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So the parentheses have a higher precedence. 85

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Okay, score Koalas is 88 plus 91 plus 110 86

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And again divided by 3 87

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And now let's quickly log both to the console here. 88

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Score Dolphins and score Koalas. 89

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Okay, so they're pretty close 90

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but the Dolphins have a little bit higher of an average. 91

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And so that's what we're working on in point two 92

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where we're going to compare the average of both teams. 93

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So, we're gonna use an if statement or if else probably. 94

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So score dolphins, if it's greater than score Koalas 95

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then log to the console, 96

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Dolphins win the trophy. 97

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And we can get fancy here with some emoji. 98

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Let's see if we got one. 99

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Ah! That's the one I'm looking for. 100

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But of course once more, 101

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you don't need to worry about this part. 102

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Let's just copy this for the next one. 103

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So, else... 104

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And actually we are going to use an else if 105

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because of the draw. 106

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But let's talk about that one later. 107

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So, if the score of the Koalas 108

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is greater than score Dolphins 109

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then we're gonna print the opposite, 110

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so that Koalas win the trophy. 111

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And finally, else if score Dolphins is equal to score Koalas 112

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then we can simply say that no one wins the trophy, 113

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or actually both win the trophy. 114

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Okay, so let's test that and indeed, 115

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we get that Dolphins win the trophy 116

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and that because as we know, this value is greater. 117

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And so actually this first condition here 118

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turns out to be true right away 119

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and so this block of code here gets executed. 120

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Now let's just quickly increase 121

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the score of the Koalas here. 122

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Let's say 100, just to see if the second part also works 123

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And it did, now the Koalas win the trophy. 124

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Okay, but let's put it back here 125

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and here you could have actually done it in another way. 126

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So you could have done score Dolphins 127

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less than score Koalas. 128

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So basically you write the same as here 129

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but instead of the greater, 130

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you will have used the less than. 131

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So that's the exact same thing and both are equally valid. 132

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Then here in the last part 133

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actually, we wouldn't even have needed this part 134

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so that the score of Dolphins is equal to score of Koalas, 135

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because that's actually the only scenario that's left 136

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given these previous two conditions. 137

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So, basically if none of these here were true, 138

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really the only thing possible 139

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would be that they had the same score 140

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and so simple else block would have been enough here. 141

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But anyway, this works just fine too 142

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and so, again what matters is that you made it work 143

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even if you did some things differently. 144

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For example, 145

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you could have stored the conditions 146

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in separate boolean variables 147

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or you could have structured the if else statement 148

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in some different way. 149

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But if you got the same result that we just saw here, 150

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then congratulations. 151

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That's a great work. 152

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Well done, really. 153

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So, maybe you even made it to bonus number one and two 154

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and so let me solve them here now, as well. 155

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So, let's start by calculating the average. 156

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So, this is gonna be bonus one. 157

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And yeah, let's copy this one, too. 158

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Let's copy this one. 159

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Let's copy this one. 160

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So we should have done it all in one go 161

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so that we can now command out this first part. 162

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So, for test number one, 163

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this should be 97, 164

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then the second one should be 112 and 101 165

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And for the Koalas, we have 109, 95 and 123. 166

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Let's just quickly test. 167

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And so right now the Koalas win the trophy. 168

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So for now everything works the same 169

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but now we need to include this important condition here, 170

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which is that with this rule, 171

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a team only wins if it has a higher score 172

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than the other team, which we already have. 173

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And, at the same time a score of at least 100 points. 174

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Okay. 175

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Easy enough. 176

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So in this case, the Dolphins win. 177

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But now we also need to ensure 178

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that the Dolphins have a score higher or equal 100. 179

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So let's just say that. 180

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So Dolphins need to have a higher score than Koalas 181

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and score Dolphins needs to be greater or equal 100 182

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and that's it. 183

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That's all we need for this requirement. 184

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And then the same thing here. 185

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So this is the scenario where the Koalas win. 186

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So for the Koalas to win 187

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they need to have a higher score than the Dolphins 188

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and at the same time, 189

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they need to have at least 100 points. 190

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So just like before, greater or equal 100. 191

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And so once more, we used a logical operator here 192

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to model this situation essentially. 193

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Okay, and actually with this we implemented 194

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this bonus number one. 195

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So let's try that again 196

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and right now of course it still works 197

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because both have a score higher than 100 198

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but let's change that now here 199

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according to test data two, to 106. 200

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So, 106... 201

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and now they both win the trophy. 202

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So let's actually decrease all these points 203

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like by 20. 204

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So let's make it 81 and 86, 205

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so the average should still be the same now 206

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Yeah, but they're both below 100 now. 207

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And so this brings us to our bonus number two 208

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that says that the minimum score 209

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should also apply to a draw. 210

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So a draw only happens when both teams have the same score 211

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and both score greater or equal 100 points, okay. 212

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And otherwise, no team wins the trophy. 213

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So that's important too. 214

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So let's translate that. 215

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So to be a draw, the score needs to be the same 216

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which we already have. 217

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And the score of Dolphins 218

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needs to be greater or equal 100 219

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and the score of Koalas needs to be greater, equal 100, okay 220

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And else... 221

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Well, then we can say that no one wins the trophy. 222

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And let's just add some sad emoji here, okay. 223

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Let's try that 224

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and now we get that no one wins the trophy, okay. 225

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So that's because their scores are now below 100. 226

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And so, we actually enter this last case here. 227

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But if we go back to the averages that we had before 228

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so 106 and 101, let's see. 229

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Now both win the trophy 230

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because they have the same amount of points 231

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and they both have a number of points above 100. 232

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And so that's exactly what we have here. 233

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So, same points, 234

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Dolphins have over, or at least 100 points 235

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and Koalas have at least 100 points. 236

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And so in this case, both win the trophy. 237

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Finally, let's also test the scenario 238

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in which both have below 239

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but the Dolphins have a little bit more. 240

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Let's put this one here at 80, and so, 241

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now we see that the Dolphins have 96 points 242

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and the Koalas have 84 243

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but still no one wins the trophy. 244

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And that's because the Dolphins have more than the Koalas 245

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so this part of the requirement is true 246

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but they do not have over 100 247

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so this part here is false, okay 248

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and so true, this first part here is true 249

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and the second part is false. 250

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True and false gives false 251

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and so then all of these are skipped 252

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because they are also obviously false 253

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and so we go straight to this last block. 254

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And so no one wins the trophy 255

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which is exactly what we were expecting 256

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as a result here, okay. 257

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Now if you didn't manage to do this here, 258

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again, don't worry because I know that this is 259

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a little bit complicated already 260

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and so in case you managed to successfully 261

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complete this challenge, then a huge congratulations to you. 262

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Well done. 263

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But if for some reason, 264

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you were not able to complete the challenge 265

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then don't worry all too much about it. 266

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You can always go back to the lectures 267

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where we first learned about these topics 268

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and you can of course, after this video 269

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also review the code a little bit more carefully 270

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to make sure 100% that you understand 271

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especially this last example that we just worked on, okay. 272

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But anyway, great job in completing this challenge 273

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and now I see you in the next video.