Reference no: EM131182168
Problem 1:
Write the function array_dup(n, obj) that returns an array containing n copies of obj.
>> array_dup(5, "hi")
=> ["hi", "hi", "hi", "hi", "hi"]
Ensure the array that gets returned contains independent copies of obj:
>> c = array_dup(5, [1,2])
=> [[1, 2], [1, 2], [1, 2], [1, 2], [1, 2]]
>> c[0].delete(1)
=> 1
>> c
=> [[2], [1, 2], [1, 2], [1, 2], [1, 2]]
Problem 2:
Write a function count_occurrences(a, obj) that counts the number of items in array a that are equal to obj.
>> a
=> [1, 2, 1, 3, 1, 4, 2, 5]
>> count_occurrences(a, 1)
=> 3
Problem 3:
Write a function insert(x, a) that takes an integer x and an array aof integers in nondecreasing order and returns a new sorted array that includes x and the integers of a. Your function should not modify a.
>> a = [2, 4, 5, 9, 12]
=> [2, 4, 5, 9, 12]
>> insert(5, a)
=> [2, 4, 5, 5, 9, 12]
>> insert(10, a)
=> [2, 4, 5, 9, 10, 12] >> insert(20, a)
=> [2, 4, 5, 9, 12, 20]
>> a
=> [2, 4, 5, 9, 12]
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