Python | sympy.nC() method
With the help of sympy.nC() method, we can calculate the number of combinations of a given length in SymPy.
Syntax: nC(items, k)
Parameter:
items – An integer, a list or a string upon which combinations is to be calculated.
k – An integer specifying the length of the combinations.Returns: Returns the number of combinations of a given length.
Example #1:
# import sympy from sympy import * items = "abca"k = 3print("Value of k = {} and the items are = {}".format(k, items)) # Use sympy.nC() method combinations = nC(items, k) print("Combinations : {}".format(combinations)) |
Output:
Value of k = 3 and the items are = abca Combinations : 3
Example #2:
# import sympy from sympy import * items = [2, 1, 3, 5, 4] k = 3print("Value of k = {} and the items are = {}".format(k, items)) # Use sympy.nC() method combinations = nC(items, k) print("Combinations : {}".format(combinations)) |
Output:
Value of k = 3 and the items are = [2, 1, 3, 5, 4] Combinations : 10
