add

Author: gunnar-miklis

2023-08-17-uS.js

@@ -0,0 +1,64 @@
+// https://www.codewars.com/kata/64d9f8b2dd14d200247b8184/train/javascript
+// FIXME: kinda works... but won't pass the test "should handle lots of names" neither "Should work for random names"
+//	* the indexOf logic is not correct.
+function generateChatRoomNames( users ) {
+	users = users
+		.sort( ( a, b ) => a.localeCompare( b ) )
+		.map( ( user ) => user
+			.split( ' ' )
+			.map( ( name ) => name[0].toUpperCase() + name.slice( 1 ).toLowerCase() )
+			.join( ' ' ),
+		);
+
+	const firstNames = users.map( ( user ) => user.split( ' ' )[0] );
+	const lastNameInitials = users.map( ( user ) => user.split( ' ' )[1][0] );
+
+	return users
+		.map( ( user, i ) => {
+			const [ firstName, lastName ] = user.split( ' ' );
+
+			const isEqualFirstName = firstNames.indexOf( firstName ) !== firstNames.lastIndexOf( firstName );
+			const isEqualLastNameIntital = lastNameInitials[firstNames.indexOf( firstName )] === lastNameInitials[firstNames.lastIndexOf( firstName )];
+
+			if ( isEqualFirstName && isEqualLastNameIntital ) {
+				return `${firstName} ${lastName}`;
+			} else if ( isEqualFirstName ) {
+				return `${firstName} ${lastName[0]}`;
+			} else {
+				return firstName;
+			}
+		} );
+}
+
+console.log( generateChatRoomNames( [
+	'JOE Bloggs',
+	'John Smith',
+] ) ); // :>> ["Joe", "John"]
+console.log( generateChatRoomNames( [
+	'Joe Bloggs',
+	'John Smith',
+	'Jane Doe',
+] ) ); // :>> ["Jane", "Joe", "John"]
+console.log( generateChatRoomNames( [
+	'Joe Bloggs',
+	'John Smith',
+	'Jane Doe',
+	'Jane Bloggs',
+] ) ); // :>> ["Jane B", "Jane D", "Joe", "John"]
+console.log( generateChatRoomNames( [
+	'Joe Bloggs',
+	'John Smith',
+	'Jane Doe',
+	'Jane Bloggs',
+	'John Scott',
+] ) ); // :>> ["Jane B", "Jane D", "Joe", "John Scott", "John Smith"]
+// FIXME: see.. there are 2x Jane with B... means, it should display the fullnames.
+console.log( generateChatRoomNames( [
+	'Joe Bloggs',
+	'Jane Smith',
+	'John Smith',
+	'Jane Doe',
+	'Jane Bright',
+	'Jane Bloggs',
+	'John Scott',
+] ) ); // :>> ["Jane B", "Jane D", "Joe", "John Scott", "John Smith"]