Java instance exercises, java instances

Source: Internet
Author: User

Java instance exercises, java instances

1. Do not use the intermediate variable to swap two numbers

Public class Exchange {public static void main (String [] args) {role = new role (System. in); System. out. println ("enter an integer:"); Long num1 = numeric. nextLong (); System. out. println ("enter an integer:"); Long num2 = numeric. nextLong (); System. out. println ("pre-exchange num1:" + num1 + "pre-exchange num2:" + num2); num1 = num1 ^ num2; num2 = num2 ^ num1; num1 = num1 ^ num2; system. out. println ("num1:" + num1 + "num2:" + num2);} Exchange

2. Use the Three-object operator to determine parity

Public class ParityCheck {public static void main (String [] args) {custom partition = new partition (System. in); System. out. println ("enter an integer:"); Long num = bytes. nextLong (); String s = (num % 2 = 0 )? "This number is: even number": "This number is: Odd Number"; System. out. println (s) ;}} ParityCheck

 

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