JAVA, for Loop Classic example

Two applications of loops: exhaustive and iterative.

One, the poor lift: will all the possible situation go through, with if filter out to meet the conditions.

Hundred Chicken Hundred Money: A Rooster 1 text money, a hen 2 text money, a chicken half wen Qian, need to buy 100 chickens, just spend, how can buy? How many kinds of buying methods are there?

        intFF = 0;  for(intg=0;g<=100;g++)        {             for(intm=0;m<=50;m++)            {                 for(intx=0;x<=200;x++)                {                    if(g+m+x==100 && g+2*m+0.5*x==100) {FF++; System.out.println ("Can buy Rooster" +g+ "only, hen" +m+ "only, Chick" +x+ "only"); } }}} System.out.print ("Total" +ff+ "method of purchase"); 

As follows:

Add + or-make a formula in the following parentheses

123 () () () () 8 () 9=100

                for(inta=-1;a<=1;a+=2)        {             for(intb=-1;b<=1;b+=2)            {                 for(intc=-1;c<=1;c+=2)                {                     for(intd=-1;d<=1;d+=2)                    {                        if(123+a*45+b*67+c*8+d*9==100) {System.out.print (a+ "\ t" +b+ "\ T" +c+ "\ T" +d); }                    }                }            }        }        

As follows:

Positive 1 is the minus 1 for the plus sign, so the order added in parentheses is 123 (+) (-) (-) (+) 8 ( -) 9=100

two , iteration: Find the law, from the known conditions, the introduction of results

Basketball Bounce: Basketball from a 10-meter position down, each drop is the previous one-third, asked to bounce 10 times after the height of basketball basketball

float h=10;for (int g=0;g<10;g++) {H=H/2;} System.out.print ("The height of the tenth time is" +h+ "M");

　　

JAVA, for Loop Classic example