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I was asked this question during an interview today.  I didn't do well though.  I guess because it was an interview, I had some pressure...

The idea is reverse the string character by character first, then reverse the word character by character.  For example, we have string ...

Today, during a phone interview, I was asked a question about WeakReference in Java.  I only knew that the weak referenced object can be gar...

The trick is that you should use BigInteger instead of long.  Otherwise, you will get overflow pretty soon.  Here is the code: import java...

For a singly linked list, you can only access the list element from the head.  At the first glance, it seems difficulty printing the element...

This was asked in on-site Microsoft interview (see original post ).  It seems the answers to this question are not correct.  This question c...

Normal binary search will return the target randomly if multiple targets are in the given array.  Below is the modified version of binary se...

Implementation of the procedure RANDOM(a, b) that only makes calls to RANDOM(0, 1).  This is the question asked in book "Introduction t...

This is an interview question: Given an integer array, find the max sum in any contiguous sub-array.  If all elements are negative, then t...