Practice 50 Swift Loops Programming Questions

Practice 50 Swift Loops Programming Questions

Q1. Write a Swift program to print numbers from 1 to 10 using a for loop.  
  Input: None  
  Expected Output: 1 2 3 4 5 6 7 8 9 10  

Q2. Write a Swift program to calculate the sum of numbers from 1 to 5 using a while loop.  
  Input: None  
  Expected Output: 15  

Q3. Write a Swift program to print the first 5 even numbers using a for loop.  
  Input: None  
  Expected Output: 2 4 6 8 10  

Q4. Write a Swift program to print the first 5 odd numbers using a for loop.  
  Input: None  
  Expected Output: 1 3 5 7 9  

Q5. Write a Swift program to print the multiplication table of 3 up to 3 x 10 using a for loop.  
  Input: None  
  Expected Output: 3 6 9 12 15 18 21 24 27 30  

Q6. Write a Swift program to find the factorial of a number (e.g., 5) using a for loop.  
  Input: 5  
  Expected Output: 120  

Q7. Write a Swift program to calculate the sum of all elements in an array using a for loop.  
  Input: [2, 4, 6, 8]  
  Expected Output: 20  

Q8. Write a Swift program to find the maximum value in an array using a for loop.  
  Input: [3, 1, 9, 4]  
  Expected Output: 9  

Q9. Write a Swift program to reverse an array using a for loop.  
  Input: [1, 2, 3, 4]  
  Expected Output: [4, 3, 2, 1]  

Q10. Write a Swift program to count the number of vowels in a string using a for loop.  
   Input: "hello"  
   Expected Output: 2  

Q11. Write a Swift program to print the first 10 Fibonacci numbers using a while loop.  
   Input: None  
   Expected Output: 0 1 1 2 3 5 8 13 21 34  

Q12. Write a Swift program to calculate the power of a number (e.g., 2^3) using a for loop.  
   Input: 2, 3  
   Expected Output: 8  

Q13. Write a Swift program to print all the elements of a dictionary using a for loop.  
   Input: ["A": 1, "B": 2, "C": 3]  
   Expected Output: A: 1, B: 2, C: 3  

Q14. Write a Swift program to print all numbers divisible by 3 from 1 to 20 using a for loop.  
   Input: None  
   Expected Output: 3 6 9 12 15 18  

Q15. Write a Swift program to calculate the sum of digits of a number using a while loop.  
   Input: 123  
   Expected Output: 6  

Q16. Write a Swift program to print a right-angled triangle pattern using a for loop.  
   Input: 3  
   Expected Output:  
   *  
   **  
   ***  

Q17. Write a Swift program to print numbers from 10 to 1 using a for loop.  
   Input: None  
   Expected Output: 10 9 8 7 6 5 4 3 2 1  

Q18. Write a Swift program to print the squares of numbers from 1 to 5 using a for loop.  
   Input: None  
   Expected Output: 1 4 9 16 25  

Q19. Write a Swift program to check if a number is prime using a for loop.  
   Input: 7  
   Expected Output: Prime  

Q20. Write a Swift program to find the GCD of two numbers using nested loops.  
   Input: 12, 18  
   Expected Output: 6  

Q21. Write a Swift program to calculate the sum of all odd numbers from 1 to 10 using a while loop.  
   Input: None  
   Expected Output: 25  

Q22. Write a Swift program to print numbers from 1 to 10, skipping multiples of 3, using a for loop.  
   Input: None  
   Expected Output: 1 2 4 5 7 8 10  

Q23. Write a Swift program to check if a number is a palindrome using a while loop.  
   Input: 121  
   Expected Output: Palindrome  

Q24. Write a Swift program to count the number of characters in a string using a for loop.  
   Input: "Swift"  
   Expected Output: 5  

Q25. Write a Swift program to print the ASCII values of characters from 'A' to 'E' using a for loop.  
   Input: None  
   Expected Output: 65 66 67 68 69  

Q26. Write a Swift program to find the sum of even numbers in an array using a for loop.  
   Input: [1, 2, 3, 4, 5]  
   Expected Output: 6  

Q27. Write a Swift program to count the occurrences of a character in a string using a for loop.  
   Input: "hello", "l"  
   Expected Output: 2  

Q28. Write a Swift program to generate the first 5 multiples of 4 using a for loop.  
   Input: None  
   Expected Output: 4 8 12 16 20  

Q29. Write a Swift program to print the reverse of a number using a while loop.  
   Input: 1234  
   Expected Output: 4321  

Q30. Write a Swift program to print numbers from 1 to 50, but skip numbers divisible by 5 using a for loop.  
   Input: None  
   Expected Output: 1 2 3 4 6 7 8 9 11...  

Q31. Write a Swift program to check if an array contains duplicate elements using a for loop.  
   Input: [1, 2, 3, 2]  
   Expected Output: Contains duplicates  

Q32. Write a Swift program to count the number of elements greater than 5 in an array using a for loop.  
   Input: [3, 6, 9, 2]  
   Expected Output: 2  

Q33. Write a Swift program to print the sum of diagonal elements of a 2D array using nested for loops.  
   Input: [[1, 2], [3, 4]]  
   Expected Output: 5  

Q34. Write a Swift program to print all elements of a 2D array using nested for loops.  
   Input: [[1, 2], [3, 4]]  
   Expected Output: 1 2 3 4  

Q35. Write a Swift program to print the elements of an array in reverse order using a for loop.  
   Input: [10, 20, 30]  
   Expected Output: 30 20 10  

Q36. Write a Swift program to find the product of all elements in an array using a for loop.  
   Input: [1, 2, 3]  
   Expected Output: 6  

Q37. Write a Swift program to print all numbers between 1 and 20 that are divisible by 4 using a for loop.  
   Input: None  
   Expected Output: 4 8 12 16 20  

Q38. Write a Swift program to calculate the average of an array using a for loop.  
   Input: [2, 4, 6, 8]  
   Expected Output: 5  

Q39. Write a Swift program to count the number of digits in a number using a while loop.  
   Input: 12345  
   Expected Output: 5  

Q40. Write a Swift program to print the cubes of numbers from 1 to 5 using a for loop.  
   Input: None  
   Expected Output: 1 8 27 64 125  

Q41. Write a Swift program to print numbers from 1 to 10 using a repeat-while loop.  
   Input: None  
   Expected Output: 1 2 3 4 5 6 7 8 9 10  

Q42. Write a Swift program to find the sum of all numbers between 1 and 100 using a for loop.  
   Input: None  
   Expected Output: 5050  

Q43. Write a Swift program to print all prime numbers between 1 and 20 using a for loop.  
   Input: None  
   Expected Output: 2 3 5 7 11 13 17 19  

Q44. Write a Swift program to reverse a string using a for loop.  
   Input: "Swift"  
   Expected Output: "tfiwS"  

Q45. Write a Swift program to print a square pattern of asterisks using a for loop.  
   Input: 3  
   Expected Output:  
   ***  
   ***  
   ***  

Q46. Write a Swift program to find the LCM of two numbers using nested loops.  
   Input: 4, 6  
   Expected Output: 12  

Q47. Write a Swift program to find the sum of squares of numbers from 1 to 4 using a for loop.  
   Input: None  
   Expected Output: 30  

Q48. Write a Swift program to find the sum of elements in an array using a while loop.  
   Input: [5, 10, 15]  
   Expected Output: 30  

Q49. Write a Swift program to print numbers from 1 to 100, but break the loop if the number is 50.  
   Input: None  
   Expected Output: 1 2 3...50  

Q50. Write a Swift program to print all multiples of 7 up to 50 using a for loop.  
   Input: None  
   Expected Output: 7 14 21 28 35 42 49