In the lesson “What is a Hash Table?” in the DS for coding interview in Java, this is the given code -
class Hashing {
public static String getValue(int key)
{
String [] myString = // pun intended
{
"I am a programmer, I have no life.",
"8 bytes walk into a bar, the bartenders asks \"What will it be?\"One of them says, \"Make us a double.\"",
"Computers are useless. They can only give you answers.\n-Pablo Picasso"
};
if (key <= myString.length)
return myString[key]; // value returned in constant time
else
System.out.println("Key Not Found!\n");
return "";
}
public static void main( String args[] )
{
System.out.println( getValue(3) ); // Test your output for other keys
}
}
This line is incorrect - if (key <= myString.length). If you call getValue(3), it will throw an Array Index Out of Bounds exception.
I’m quite disappointed with the quality of these lessons. As I cover more of them, I keep finding more such bugs all throughout. You would think a website that charges so much for its content would be bug free.