Create Swap Case

Author: ratracegrad

Swap Case

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+/***************************************************************************************
+*                                                                                      *
+*                  CODERBYTE BEGINNER CHALLENGE                                        *
+*                                                                                      *
+*  Swap Case                                                                           *
+*  Using the JavaScript language, have the function SwapCase(str) take the str         *
+*  parameter and swap the case of each character. For example: if str is "Hello World" *
+*  the output should be hELLO wORLD. Let numbers and symbols stay the way they are.    *                                                   *
+*                                                                                      *
+*  SOLUTION                                                                            *
+*  I am going to be using a new string to store my modified results. I am going to     *
+*  loop thru every character and covert it to UpperCase. Then I am going to compare    *
+*  that to the character in the string. If they are the same - meaning both are        *
+*  uppercase then I am going to return the lowercase of the character. If they are not *
+*  the same then return the Uppercase character.
+*                                                                                      *
+*  Steps for solution                                                                  *
+*    1) Create new string to hold my results                                           *
+*    2) Loop thru each character in the string                                         *
+*    3) Save the uppercase of this character in u                                      *
+*    4) Compare uppercase to current character                                         *
+*    5) If they are the same then return the lowercase                                 *
+*    6) Else return uppercase                                                          *
+*                                                                                      *
+***************************************************************************************/
+
+function SwapCase(str) { 
+
+  var result = '';
+
+  for (var i = 0; i < str.length; i++) {
+    var c = str[i];
+    var u = c.toUpperCase();
+
+    result += u === c ? c.toLowerCase() : u;
+  }
+
+  return result;
+         
+}