Practice 50 Swift Collections Programming Questions

Practice 50 Swift Collections Programming Questions

Q1. Write a Swift program to create an array of integers and print all elements in the array.
  Input: [1, 2, 3, 4]
  Output: 1, 2, 3, 4

Q2. Write a Swift program to find the length of an array of strings.
  Input: ["apple", "banana", "cherry"]
  Output: 3

Q3. Write a Swift program to add an element to an array of integers.
  Input: [10, 20, 30], New Element: 40
  Output: [10, 20, 30, 40]

Q4. Write a Swift program to remove an element from an array of strings.
  Input: ["cat", "dog", "fish"], Remove: "dog"
  Output: ["cat", "fish"]

Q5. Write a Swift program to check if an element exists in an array.
  Input: [1, 2, 3, 4], Element: 3
  Output: true

Q6. Write a Swift program to merge two arrays of integers.
  Input: [1, 2], [3, 4]
  Output: [1, 2, 3, 4]

Q7. Write a Swift program to find the index of an element in an array.
  Input: ["apple", "banana", "cherry"], Element: "banana"
  Output: 1

Q8. Write a Swift program to sort an array of integers in ascending order.
  Input: [3, 1, 2]
  Output: [1, 2, 3]

Q9. Write a Swift program to reverse an array of strings.
  Input: ["a", "b", "c"]
  Output: ["c", "b", "a"]

Q10. Write a Swift program to remove duplicates from an array of integers.
   Input: [1, 2, 2, 3]
   Output: [1, 2, 3]

Q11. Write a Swift program to create a dictionary with keys and values and print them.
   Input: ["name": "John", "age": 30]
   Output: name: John, age: 30

Q12. Write a Swift program to access a value from a dictionary using a key.
   Input: ["name": "Alice", "city": "New York"], Key: "city"
   Output: New York

Q13. Write a Swift program to add a key-value pair to a dictionary.
   Input: ["name": "Bob"], Key: "age", Value: 25
   Output: ["name": "Bob", "age": 25]

Q14. Write a Swift program to remove a key-value pair from a dictionary.
   Input: ["name": "Charlie", "age": 30], Key: "age"
   Output: ["name": "Charlie"]

Q15. Write a Swift program to check if a key exists in a dictionary.
   Input: ["name": "Dave", "city": "Paris"], Key: "name"
   Output: true

Q16. Write a Swift program to merge two dictionaries.
   Input: ["a": 1], ["b": 2]
   Output: ["a": 1, "b": 2]

Q17. Write a Swift program to find all keys in a dictionary.
   Input: ["name": "Eve", "city": "Berlin"]
   Output: ["name", "city"]

Q18. Write a Swift program to find all values in a dictionary.
   Input: ["name": "Fay", "age": 28]
   Output: ["Fay", 28]

Q19. Write a Swift program to create a set of integers and print the set.
   Input: [1, 2, 3, 4]
   Output: [1, 2, 3, 4]

Q20. Write a Swift program to add an element to a set.
   Input: [1, 2, 3], New Element: 4
   Output: [1, 2, 3, 4]

Q21. Write a Swift program to remove an element from a set.
   Input: [1, 2, 3], Remove: 2
   Output: [1, 3]

Q22. Write a Swift program to check if an element exists in a set.
   Input: [1, 2, 3], Element: 3
   Output: true

Q23. Write a Swift program to find the union of two sets.
   Input: [1, 2], [2, 3]
   Output: [1, 2, 3]

Q24. Write a Swift program to find the intersection of two sets.
   Input: [1, 2], [2, 3]
   Output: [2]

Q25. Write a Swift program to find the difference between two sets.
   Input: [1, 2], [2, 3]
   Output: [1]

Q26. Write a Swift program to convert a set to an array.
   Input: [1, 2, 3]
   Output: [1, 2, 3]

Q27. Write a Swift program to create an array of tuples and print it.
   Input: [(1, "a"), (2, "b")]
   Output: [(1, "a"), (2, "b")]

Q28. Write a Swift program to access elements of a tuple in an array.
   Input: [(1, "a"), (2, "b")], Index: 1
   Output: (2, "b")

Q29. Write a Swift program to find the length of a tuple.
   Input: (1, 2, 3)
   Output: 3

Q30. Write a Swift program to create a dictionary of tuples.
   Input: ["name": (1, "Alice"), "age": (2, 30)]
   Output: ["name": (1, "Alice"), "age": (2, 30)]

Q31. Write a Swift program to access a value in a tuple inside a dictionary.
   Input: ["name": (1, "Bob")], Key: "name"
   Output: (1, "Bob")

Q32. Write a Swift program to create a set of strings and print it.
   Input: ["apple", "banana"]
   Output: ["apple", "banana"]

Q33. Write a Swift program to remove duplicates from a set of strings.
   Input: ["apple", "banana", "apple"]
   Output: ["apple", "banana"]

Q34. Write a Swift program to sort an array of strings.
   Input: ["pear", "apple", "banana"]
   Output: ["apple", "banana", "pear"]

Q35. Write a Swift program to check if two arrays are equal.
   Input: [1, 2, 3], [1, 2, 3]
   Output: true

Q36. Write a Swift program to check if a dictionary is empty.
   Input: ["name": "Tom"]
   Output: false

Q37. Write a Swift program to find the first element of an array.
   Input: [10, 20, 30]
   Output: 10

Q38. Write a Swift program to find the last element of an array.
   Input: [10, 20, 30]
   Output: 30

Q39. Write a Swift program to create an empty dictionary.
   Output: [:]

Q40. Write a Swift program to create an empty set of strings.
   Output: []

Q41. Write a Swift program to find the maximum value in an array of integers.
   Input: [3, 5, 1, 8]
   Output: 8

Q42. Write a Swift program to find the minimum value in an array of integers.
   Input: [3, 5, 1, 8]
   Output: 1

Q43. Write a Swift program to iterate through an array and print each element.
   Input: ["a", "b", "c"]
   Output: a, b, c

Q44. Write a Swift program to join two arrays into one.
   Input: [1, 2], [3, 4]
   Output: [1, 2, 3, 4]

Q45. Write a Swift program to check if an array is empty.
   Input: [1, 2]
   Output: false

Q46. Write a Swift program to create an array from a set of integers.
   Input: [1, 2, 3]
   Output: [1, 2, 3]

Q47. Write a Swift program to find the common elements between two sets.
   Input: [1, 2, 3], [2, 3, 4]
   Output: [2, 3]

Q48. Write a Swift program to perform a symmetric difference of two sets.
   Input: [1, 2], [2, 3]
   Output: [1, 3]

Q49. Write a Swift program to filter even numbers from an array.
   Input: [1, 2, 3, 4]
   Output: [2, 4]

Q50. Write a Swift program to convert a dictionary into an array of tuples.
   Input: ["name": "John", "age": 30]
   Output: [("name", "John"), ("age", 30)]