P61 2.15
Import Java.util.Scanner;
Public classTest { Public Static voidMain (string[] args) {Scanner Hy=NewScanner (system.in); DoubleX1,x2,y1,y2; System.out.println ("Please type the value of X1:"); X1=double.valueof (Hy.nextline ()); System.out.println ("Please type the value of X2:"); X2=double.valueof (Hy.nextline ()); System.out.println ("Please type the value of Y1:"); Y1=double.valueof (Hy.nextline ()); System.out.println ("Please type the value of Y2:"); Y2=double.valueof (Hy.nextline ()); System.out.println ("The distance between the two points is:" + Math.pow ((Math.pow ((x2-x1), 2) +math.pow ((y2-y1), 2)), 0.5)); }}
//P60 2.6ImportJava.util.Scanner; Public classTest { Public Static voidMain (string[] args) {Scanner Hy=NewScanner (system.in); String Hyper; System.out.println ("Please enter a 0-1000 integer to find the number of integers and"); Hyper=Hy.nextline (); //Method 1 intTest =integer.valueof (Hyper); if(Test > 0 && Test <= 1000) { intA = test% 2; intb = TEST/10; intc = test/100; System.out.println ("Sum is:" + (A + B +c)); } Else{System.out.println ("Don't skin!" "); } //Method 2 /*if (integer.valueof (Hyper) <=) {int a = 0; for (int i = 0; i < hyper.length (); i++) {a = a + integer.valueof (hyper.substring (i, i + 1)); } System.out.println (a); }*/ }}
Java 2017.9.11 Yang Haoning Jobs