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Which of the following methods can be used to calculate the factorial of a number in Java?
  • a)
    public static int factorial(int n) { ... }
  • b)
    public static long factorial(long n) { ... }
  • c)
    public static int factorial(int n, int m) { ... }
  • d)
    public static int factorial(int[] arr) { ... }
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Which of the following methods can be used to calculate the factorial ...
Both option a) and b) are valid methods to calculate the factorial of a number. The return type of the factorial function can be either 'int' or 'long' depending on the range of values you want to support.
Note: The other options c) and d) are not suitable for calculating the factorial. Option c) includes an extra parameter m that is not required for factorial calculation, and option d) takes an array as a parameter, which is not necessary for the factorial computation.
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Which of the following methods can be used to calculate the factorial of a number in Java?a)public static int factorial(int n) { ... }b)public static long factorial(long n) { ... }c)public static int factorial(int n, int m) { ... }d)public static int factorial(int[] arr) { ... }Correct answer is option 'A'. Can you explain this answer?
Question Description
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