Number
Following operations are supported on number data type.
Reverse Number
Returns the reverse of the given number.
Usage
reverseNumber(3245); // Returns 5423Returns
Returns the reverseof the number.
Prime Number
Checks if the given number is prime or not.
Usage
isPrime(23); // Returns `true`Returns
Returns true is the given number is prime, otherwise false.
Palindrome Number
Checks if the given number is palindrome or not.
Usage
isNumberPalindrome(23632); // Returns `true`Returns
Returns true is the given number is palindrome, otherwise false.
Factorial
Returns the factorial (n!) of the given number.
Usage
factorial(5); // Returns 120Returns
Returns the factorial of the given number.
Permutations
Returns the possible number of arrangements (nPk) can be formed from selecting k items from a set of n items. The order of the arrangement matters here.
k value must be smaller or equal to the n.
Usage
permutations(5, 4); // i.e. 5P4 Checks the number of ways 4 items can be arranged out of 5, will return result as 120.Arguments
n: Number of items in a set.k: Number of items arranged fromn.
Returns
Returns the number of ways to arrange 4 items out of 5.
Combinations
Returns the possible number of ways (nCk) of selecting k items from a set of n items. The order of the arrangement doesn't matter here.
k value must be smaller or equal to the n.
Usage
combinations(5, 4); // i.e. 5C4 Checks the number of ways 4 items can be selected out of 5, will return result as 5.Arguments
n: Number of items in a set.k: Number of items selected fromn.
Returns
Returns the number of ways to select 4 items out of 5.