Sum of first n odd numbers in O ( 1 ) Complexity | Python3 program to find sum of first n odd numbers ; Returns the sum of first n odd numbers ; Driver Code
def oddSum ( n ) : NEW_LINE INDENT sum = 0 NEW_LINE curr = 1 NEW_LINE i = 0 NEW_LINE while i < n : NEW_LINE INDENT sum = sum + curr NEW_LINE curr = curr + 2 NEW_LINE i = i + 1 NEW_LINE DEDENT return sum NEW_LINE DEDENT n = 20 NEW_LINE print ( " ▁ Sum ▁ of ▁ first " , n , " Odd ▁ Numbers ▁ is : ▁ " , oddSum ( n ) ) NEW_LINE