happiness Number :) problem

14. happinessNumber/happinessNumber.js

@@ -0,0 +1,32 @@
+/*
+PROBLEM
+    You will be given a string of characters containing only the following characters: "(", ")", ":"
+    Create a function that returns a number based on the number of sad and happy smiley faces there is.
+        * The happy faces :) and (: are worth 1.
+        * The sad faces :( and ): are worth -1.
+        * Invalid faces are worth 0.
+    EXPLANATION :
+            happinessNumber(":):(") ➞ -1
+                The first 2 characters are :)        +1      Total: 1
+                The next 2 are ):                    -1      Total: 0
+                The last 2 are :(                    -1      Total: -1
+*/
+
+function happinessNumber(smilies) {
+    let arr = smilies.split('');
+    let count = 0;
+    for (var i = 0; i < arr.length; i++) {
+        if (arr[i] + arr[i + 1] == ':)') count += 1;
+
+        if (arr[i] + arr[i + 1] == '(:') count += 1;
+
+        if (arr[i] + arr[i + 1] == '):') count -= 1;
+
+        if (arr[i] + arr[i + 1] == ':(') count -= 1;
+    }
+    return count;
+}
+
+// console.log(happinessNumber(":):(")) // -1
+// console.log(happinessNumber("(:)"))  //  2
+// console.log(happinessNumber("::::")) //  0

README.md

@@ -85,6 +85,7 @@ __Algorithms practiced using JS__
 10. Caesar Cipher
 11. Lexicographically equal or not
 12. Fizz Buzz
+14. happinessNumber
 
 ## Explanation
 <b>1. String reversing</b>
@@ -1532,4 +1533,59 @@ const dist = dijkstra(graph, 6);
 console.log(dist);
 
 ```
-</p>
+</p>
+
+
+
+</p>
+<hr>
+<hr>
+
+<b>14. happinessNumber</b>
+
+__The Challenge:__
+
+Hpiness Number Problem :)
+
+__Algorithmic Thinking:__
+``` text
+PROBLEM
+    You will be given a string of characters containing only the following characters: "(", ")", ":"
+    Create a function that returns a number based on the number of sad and happy smiley faces there is.
+        * The happy faces :) and (: are worth 1.
+        * The sad faces :( and ): are worth -1.
+        * Invalid faces are worth 0.
+    EXPLANATION :
+            happinessNumber(":):(") ➞ -1
+                The first 2 characters are :)        +1      Total: 1
+                The next 2 are ):                    -1      Total: 0
+                The last 2 are :(                    -1      Total: -1
+
+```
+__Implementation:__
+
+```js
+
+function happinessNumber(smilies) {
+    let arr = smilies.split('');
+    let count = 0;
+    for (var i = 0; i < arr.length; i++) {
+        if (arr[i] + arr[i + 1] == ':)') count += 1;
+
+        if (arr[i] + arr[i + 1] == '(:') count += 1;
+
+        if (arr[i] + arr[i + 1] == '):') count -= 1;
+
+        if (arr[i] + arr[i + 1] == ':(') count -= 1;
+    }
+    return count;
+}
+
+console.log(happinessNumber(":):(")) // -1
+console.log(happinessNumber("(:)"))  //  2
+console.log(happinessNumber("::::")) //  0
+
+```
+
+
+