Merge pull request #109 from ausrazali/add-js-exercise-files

Add js exercise files

Hacktoberfest-2021/FirdausRazali/js-exercise/exercise003.js

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+/*
+In the casino game Blackjack, a player can determine whether
+they have an advantage on the next hand over the house by keeping track of
+the relative number of high and low cards remaining in the deck.
+This is called Card Counting.
+
+Having more high cards remaining in the deck favors the player.
+Each card is assigned a value according to the table below.
+When the count is positive, the player should bet high.
+When the count is zero or negative, the player should bet low.
+
+| Count Change  | Cards                 |
+| +1            | 2, 3, 4, 5, 6         |
+| 0             | 7, 8, 9               |
+| -1            | 10, 'J', 'Q', 'K', 'A'|
+
+You will write a card counting function.
+It will receive a `card` parameter, which can be a number or a string,
+and increment or decrement the global `count` variable according to the card's value (see table).
+The function will then return a string with the current count and the string `Bet` if the count is positive,
+or `Hold` if the count is zero or negative.
+The current count and the player's decision (`Bet` or `Hold`) should be separated by a single space.
+
+**Example Outputs:** `-3 Hold` or `5 Bet`
+
+**Hint**  
+Do NOT reset `count` to 0 when value is 7, 8, or 9.  
+Do NOT return an array.  
+Do NOT include quotes (single or double) in the output.
+*/
+
+let count = 0;
+
+function cc(card) {
+    switch(card){
+        case 2:
+        case 3:
+        case 4:
+        case 5:
+        case 6:
+            count++;
+            break;
+        case 7:
+        case 8:
+        case 9:
+            count;
+            break;
+        case 10:
+        case 'J':
+        case 'Q':
+        case 'K':
+        case 'A':
+            count--;
+    }
+    if (count <= 0) {
+        return count + " Hold";
+    } else {
+        return count + " Bet";
+    }
+}
+
+console.log(cc(2));
+console.log(cc(3));
+console.log(cc(7));
+console.log(cc('K'));
+console.log(cc('A'));

Hacktoberfest-2021/FirdausRazali/js-exercise/exercise004.js

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+/*Convert the switch statement into an object called `lookup`.
+Use it to look up `val` and assign the associated string to the `result` variable.
+
+// Setup
+function phoneticLookup(val) {
+	let result = "";
+	// Only change code below this line
+	switch(val) {
+		case "alpha":
+			result = "Adams";
+			break;
+		case "bravo":
+			result = "Boston";
+			break;
+		case "charlie":
+			result = "Chicago";
+			break;
+		case "delta":
+			result = "Denver";
+			break;
+		case "echo":
+			result = "Easy";
+			break;
+		case "foxtrot":
+			result = "Frank";
+	}
+	// Only change code above this line
+	return result;
+}
+
+phoneticLookup("charlie");
+*/
+
+function phoneticLookup(val) {
+	let result = "";
+	const lookup = {
+		"alpha": "Adams",
+		"bravo": "Boston",
+		"charlie": "Chicago",
+		"delta": "Denver",
+		"echo": "Easy",
+		"foxtrot": "Frank"
+	};
+	result = lookup[val];
+	return result;
+}
+
+console.log(phoneticLookup("charlie"));