Using Data as Index
Implementation
Prototype
Advance
Generalizing to Other Than Integer
Method:（二进制编码法）
Perceiving strings as a number with base 27(because of 26 letters)
Improvement
Problem
Handling Collisions
(Buckets)
Modulo primes:为什么哈希函数要模质数 What if modulo a negative number?
Runtime:
Hash Table
Math.floorMod is more recommended because it can handle negative hashCode.
