Data Structures, Algorithms, & Applications in C++
Chapter 10, Exercise 13

(a)

Not a uniform hash function because no keys are mapped into buckets 48 and 49.

(b)

Not a uniform hash function because no keys are mapped into odd buckets.

(c)

Not a uniform hash function because no keys are mapped into even buckets.

(d)

Not a uniform hash function because only 26 of the 70 buckets can be a home bucket.