Javase Advanced No. 03 Math class and guess number game

2016-07-24

1,math Class Introduction

Math.random () [0,1)

2, guess the number game

Homework: Guess the number of small program optimization, increase the number of times limit function.

 Package com.java1995;  Public class Testmath {    publicstaticvoid  main (string[] args) {          Double d = Math.ceil (2.98);        System.out.println (d);         = Math.floor (2.98);        System.out.println (d);        System.out.println (Math.max (6.5, 4.6));          for (int i = 0; i < ten; i++) {            System.out.println (Math.random ())     }}}

 Packagecom.java1995;ImportJava.util.Scanner; Public classGuessnumber { Public Static voidMain (string[] args) {intnum = (int) (Math.random () * 100) + 1;//[1,100]System.out.println ("Please enter an integer between 1-100"); Scanner SC=NewScanner (system.in);  while(true) {            intinput =Sc.nextint (); if(Input >num) {System.out.println ("Too big."); } Else if(Input <num) {System.out.println ("Very small."); } Else{System.out.println ("Congratulations, you guessed it!" ");  Break; }        }        //sc.close ();    }}

Resources

[1] Java Easy Start Classic tutorial "full version"

Javase Advanced No. 03 Math class and guess number game