I am a novice programmer. I want to learn basic math on number theory and combinatorics. At first, i want to read basic level books then mid level and high level books on number theory and combinatorics.
Can anyone suggest me best books on number theory and combinatorics ? ( step by step basic,mid and high level).
Combinatorial Problems and Exercises by Lovasz is an excellent book. In my opinion, the problems are quite difficult, though.