125 lines
5.5 KiB
Markdown
125 lines
5.5 KiB
Markdown
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---
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title: Golf Code
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---
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 Remember to use <a>**`Read-Search-Ask`**</a> if you get stuck. Try to pair program  and write your own code 
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###  Problem Explanation:
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In the game of golf each hole has a **par** meaning the average number of **strokes** a golfer is expected to make in order to sink the ball in a hole to complete the play. Depending on how far above or below **par** your **strokes** are, there is a different nickname.
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Your function will be passed **par** and **strokes** arguments. You've to return the correct string according to this table which lists the strokes in order of priority; top (highest) to bottom (lowest):
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Strokes | Return
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:--------- | :-------------
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1 | "Hole-in-one!"
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<= par - 2 | "Eagle"
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par - 1 | "Birdie"
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par | "Par"
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par + 1 | "Bogey"
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par + 2 | "Double Bogey"
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>= par + 3 | "Go Home!"
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**par** and **strokes** will always be numeric and positive.
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* Change the code below `// Only change code below this line` and above `// Only change code above this line`.
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* Ensure that you're editing the inside of the `golfScore` function.
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* You will have to make the function return exactly the same string as shown shown in the table, depending on the value of the parameters **par** and **strokes** that are passed to your function.
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##  Hint: 1
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`+number -number` can be used to increase or decrease a parameter in your condition.
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> _try to solve the problem now_
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##  Hint: 2
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You use `if / else if` chains to return different values in different scenarios.
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> _try to solve the problem now_
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##  Hint: 3
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Control the flow of your function based on the tables order of priority - top (highest) to bottom (lowest) to return matching string values.
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> _try to solve the problem now_
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## Spoiler Alert!
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**Solution ahead!**
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##  Basic Code Solution:
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function golfScore(par, strokes) {
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// Only change code below this line
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if (strokes == 1){
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return "Hole-in-one!";
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} else if (strokes <= par -2){
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return "Eagle";
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} else if (strokes == par -1) {
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return "Birdie";
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} else if (strokes == par) {
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return "Par";
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} else if (strokes == par +1) {
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return "Bogey";
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} else if (strokes == par +2) {
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return "Double Bogey";
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} else {
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return "Go Home!";
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}
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// Only change code above this line
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}
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// Change these values to test
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golfScore(5, 4);
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### Code Explanation:
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* Compare the parameters **par** and **strokes** to return appropriate string values.
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* `if / else if` chain is used for flow control.
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* String "Go Home!" is returned for every condition where **strokes** is greater than or equal to **par + 3**.
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## Alternative code solution:
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```javascript
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var names = ["Hole-in-one!", "Eagle", "Birdie", "Par", "Bogey", "Double Bogey", "Go Home!"];
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function golfScore(par, strokes) {
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// Only change code below this line
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if (strokes == 1){
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return names[0];
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}
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else if (strokes <= par-2){
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return names[1];
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}
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else if (strokes == par -1){
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return names[2];
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}
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else if (strokes == par){
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return names[3];
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}
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else if (strokes == par +1){
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return names[4];
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}
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else if (strokes == par +2){
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return names[5];
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}
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else {return names[6];}
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// Only change code above this line
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}
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// Change these values to test
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golfScore(5, 4);
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```
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·Run at [repl.it](https://repl.it/@AdrianSkar/Basic-JS-Golf-code)
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## Code explanation
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Since we already have an array defined in the variable `names` we can take advantage of it and use it for our return statements using indexes (eg: `names[0] is the first one`). That way, if you ever need to change a specific result you wouldn't need to look for it inside the function, it'd be at the beginning, in your array.
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### Resources
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* <a href='https://en.wikipedia.org/wiki/Golf' target='_blank' rel='nofollow'>Golf</a>
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* <a href='http://www.freecodecamp.com/challenges/chaining-if-else-statements' target='_blank' rel='nofollow'>Challenge: Chaining If Else Statements</a>
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* <a href='http://www.freecodecamp.com/challenges/comparison-with-the-greater-than-equal-to-operator' target='_blank' rel='nofollow'>Challenge: Comparison with the Greater Than Equal To Operator</a>
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* <a href='http://www.freecodecamp.com/challenges/comparison-with-the-less-than-equal-to-operator' target='_blank' rel='nofollow'>Challenge: Comparison with the Less Than Equal To Operator</a>
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* ["Array" - *MDN JavaScript reference*](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)
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