capitalize first letter in each word in a given string;

Author: FairlyTales

string_manipulation_algorithms/capitalizeFirstLetter_JS_Way.ts

@@ -0,0 +1,19 @@
+// function accepts a string containing words and returns a string which
+// has every word capitalized (i.e. first letter is a capital)
+
+// O(n)
+function capitalizeFirstLetter_JS_Way(inputString: string): string {
+  const words: string[] = inputString.split(' ');
+
+  const capitalizedWords: string[] = words.map(
+    (word) => word.slice(0, 1).toUpperCase() + word.slice(1),
+  );
+
+  return capitalizedWords.join(' ');
+}
+
+// should return: I Am A String
+console.log(capitalizeFirstLetter_JS_Way('i am a string'));
+
+// should return: I Am A String With Comma, And Stuff!
+console.log(capitalizeFirstLetter_JS_Way('i am a string with comma, and stuff!'));