Merge pull request YearOfProgramming#160 from Zirhc86/master

challenges 1 & 2 in javascript
karanchawla · Jan 4, 2017 · d58966e · d58966e
2 parents 0448e14 + db3f7d0
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diff --git a/challenge_1/javascript/Zirhc86/readme.md b/challenge_1/javascript/Zirhc86/readme.md
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+# 2017 Year of Programming
+## Challenge_1
+### Reverse a String
+#### Synopsis
+reverses a given string
+
+#### Instructions
+Open index.html in any browser and open developer console.
+You can run `test()` with no arguments to log *Example string!* reversed, or pass 
+a string to log it reversed. ie:
+```javascript
+test('Reverse this');
+```
+
+
+### Contact
+Chris -- zirhc86@gmail.com
+
+https://github.com/Zirhc86
diff --git a/challenge_1/javascript/Zirhc86/src/index.html b/challenge_1/javascript/Zirhc86/src/index.html
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+<!DOCTYPE HTML>
+<html lang="en">
+    <head>
+        <meta charset="utf-8" />
+        <title>Challenge_1|YoP 2017</title>
+    </head>
+
+    <body>
+        <script src="./stringReverse.js"></script>
+    </body>
+</html>
diff --git a/challenge_1/javascript/Zirhc86/src/stringReverse.js b/challenge_1/javascript/Zirhc86/src/stringReverse.js
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+
+console.log('Running test() with no argument will log \'Example string!\' reversed.');
+
+/*
+ ********************************************************************
+ ************************CHALLENGE ANSWER ***************************
+ ********************************************************************/
+function reverseString(stringToReverse) {
+	return stringToReverse.split('').reverse().join('');
+}
+
+/********************************************************************
+*********************************************************************
+*********************************************************************/
+
+
+// Test function. Logs default string if no string is passed when called
+function test(testString){
+	if(testString){
+		console.log(reverseString(testString));
+	}
+	else{
+		console.log(reverseString('Example string!'));
+	}
+}
diff --git a/challenge_2/javascript/Zirhc86/readme.md b/challenge_2/javascript/Zirhc86/readme.md
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+# 2017 Year of Programming
+## Challenge_2
+### Single Number
+#### Synopsis
+Searches through array for characters that only appear once, then logs them to 
+console.
+
+#### Instructions
+Open index.html in any browser and open developer console.
+Two preset arrays will output their single characters.
+You can run `test()` with your own defined array. ie:
+```javascript
+test([3, 2, 'z', 2, 6, 'i']);
+```
+
+### Contact
+Chris -- zirhc86@gmail.com
+
+https://github.com/Zirhc86
diff --git a/challenge_2/javascript/Zirhc86/src/index.html b/challenge_2/javascript/Zirhc86/src/index.html
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+<html lang="en"><head>
+        <meta charset="utf-8">
+        <title>Challenge_2|YoP 2017</title>
+    </head>
+
+    <body>
+        <script src="./singleNumber.js"></script>
+
+</body></html>
diff --git a/challenge_2/javascript/Zirhc86/src/singleNumber.js b/challenge_2/javascript/Zirhc86/src/singleNumber.js
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+var array = [2, 3, 4, 2, 3, 5, 4, 6, 4, 6, 9, 10, 9, 8, 7, 8, 10, 7];
+var mixedArray = 
+    [2,'a','l',3,'l',4,'k',2,3,4,5,'a',6,'c',4,'m',6,'m','k',9,10,9,8,7,8,10,7];
+
+// Passes array values as keys into 'acc' object and increments by 1 each time
+// a value is encountered
+function getTally(arr){
+  return arr.reduce(function(acc, curr){
+    acc[curr] ? acc[curr]++ : acc[curr] = 1;
+    return acc;
+  }, {});
+}
+
+// Filter out any keys in object that has a value of 1, and add to a string,
+// separating chars with ', ' for each new addition
+function logSingles(obj){
+  var singles = '';
+  for (var key in obj){
+    if(obj[key] === 1){
+      singles.length >=1 ? singles += ', ' + key : singles = key;
+    }
+  }
+  return singles;
+}
+
+function test(arr){
+  console.log(logSingles(getTally(arr)));
+}
+
+test(array);
+test(mixedArray);