count.jscommitted

Author: carlosyabreu

Sprint-3/2-practice-tdd/count.js

@@ -1,5 +1,39 @@
+/**
+ *
 function countChar(stringOfCharacters, findCharacter) {
   return 5
 }
 
 module.exports = countChar;
+*
+*/
+
+function countChar(stringOfCharacters, findCharacter) {
+  // Input validation - return 0 for invalid inputs
+  if (typeof stringOfCharacters !== 'string' || typeof findCharacter !== 'string') {
+    return 0;
+  }
+
+  // Return 0 if either parameter is empty
+  if (stringOfCharacters.length === 0 || findCharacter.length === 0) {
+    return 0;
+  }
+
+  // Use only the first character of findCharacter (as per test expectations)
+  const searchChar = findCharacter[0];
+
+  let count = 0;
+
+  // Count occurrences of the character
+  for (let i = 0; i < stringOfCharacters.length; i++) {
+    // Case-sensitive comparison
+    if (stringOfCharacters[i] === searchChar) {
+      count++;
+    }
+  }
+
+  return count;
+}
+
+module.exports = countChar;
+