consecutive-ducks

Consecutive Ducks

Positive integers have so many gorgeous features.

Some of them could be expressed as a sum of two or more consecutive positive numbers.

Consider an Example :

• 10 , could be expressed as a sum of 1 + 2 + 3 + 4 .

Task

Given Positive integer, N , Return true if it could be expressed as a sum of two or more consecutive positive numbers , OtherWise return false .

Notes

• Guaranteed constraint : 2 ≤ N ≤ (2^31) -1 .

Input >> Output Examples:

* consecutiveDucks(9)  ==>  return (true)  //  9 , could be expressed as a sum of ( 2 + 3 + 4 ) or ( 4 + 5 ) . 
* consecutiveDucks(64)  ==>  return (false)
* consecutiveDucks(42)  ==>  return (true) //  42 , could be expressed as a sum of ( 9 + 10 + 11 + 12 )  .