algorithm and data structure

Algorithm:an algorithm is defined as finite sequence of unamigious instructions followed to accomplish the following tasks.

GCD: greatest comman divisor
Different types of calculating gcd are
1)euclid's algorithm
2) consecutive integer checking algorithm
3)middle school procedure

important problem types:
1) sorting
2) searching
3) graph problems
4)geometrical problems
5)numerical problems

data structure:A data structure is a methoed of storing the data in the computer so that it can be used efficiently.
Different types of data structure: primitive and non primitive.