Regular Expression Matching
September 1, 2011 in backtracking, string
Implement regular expression matching with support for ‘.’ and ‘*’.
You are browsing the archive for backtracking.
by 1337c0d3r
by 1337c0d3r
Unique Paths
November 4, 2010 in backtracking, dynamic programming
A robot is located at the top-left corner of a m x n grid (marked ‘Start’ in the diagram below). The robot can only move either down or right at any point in time. The robot is trying to reach the bottom-right corner of the grid (marked ‘Finish’ in the diagram below). How many possible unique paths are there?
by 1337c0d3r
Print All Combinations of a Number as a Sum of Candidate Numbers
September 30, 2010 in backtracking
Given a target number, and a series of candidate numbers, print out all combinations, so that the sum of candidate numbers equals to the target.
Read the rest of this entry →