the even or odd quality of an integer. If two integers are both odd or both even,they are said to have the same parity; if one is odd and one even,they have different parity

• 奇偶性，一个整数奇数或偶数的性质。假如两个整数都是奇数或都是偶数，则它们具有相同的奇偶性；假如一个是奇数，一个是偶数，它们则具有相异的奇偶性