Which of these is not a core data type?
Question 1 Explanation:
Class is a user defined data type
What data type is the object below ? L = [1, 23, ‘hello’, 1]
Question 2 Explanation:
[ ] defines a list
Which of the following function convert a string to a float in python?
long(x [,base] )
Question 3 Explanation:
float(x) − Converts x to a floating-point number
Which of the following statement(s) is TRUE?
- A hash function takes a message of arbitrary length and generates a fixed length code.
- A hash function takes a message of fixed length and generates a code of variable length.
- A hash function may give the same hash value for distinct messages.
II and III only
I and III only
Question 4 Explanation:
Hash function is defined as any function that can be used to map data of arbitrary size of data to a fixed size data.. The values returned by a hash function are called hash values, hash codes, digests, or simply hashes : Statement 1 is correct Yes, it is possible that a Hash Function maps a value to a same location in the memmory that's why collision occurs and we have different technique to handle this problem : Statement 3 is coorect. eg : we have hash function, h(x) = x mod 3 Acc to Statement 1, no matter what the value of 'x' is h(x) results in a fixed mapping location. Acc. to Statement 3, h(x) can result in same mapping mapping location for different value of 'x' e.g. if x = 4 or x = 7 , h(x) = 1 in both the cases, although collision occurs. This solution is contributed by Mohit Gupta.
There are 4 questions to complete.