Given an unsorted array of integers, find the length of the longest consecutive elements sequence.

For example,

Given ,

The longest consecutive elements sequence is . 82 more words

Given an unsorted array of integers, find the length of the longest consecutive elements sequence.

For example,

Given ,

The longest consecutive elements sequence is . 82 more words

Given two words (start and end), and a dictionary, find all shortest transformation sequence(s) from start to end, such that:

Only one letter can be changed at a time… 413 more words

Given two words (start and end), and a dictionary, find the length of shortest transformation sequence from start to end, such that:

Only one letter can be changed at a time… 179 more words

Back in days when I was on the Czech Technical University in Prague, I was thinking of myself as a good coder. I have to admit, that after several years of being in a corporate environment I’ve found I was totally wrong. 253 more words