import java.util.Arrays;

/**
 * Created by lihaibin02 on 2016/9/26.
 */
public class Test_String {
    //統計二進位制有多少個1
    public static int count_Number(int n) {
        int count = 0;
        while (n > 0) {
            if ((n & 1) == 1) {
                count++;
            }
            n >>= 1;
        }
        return count;
    }

    //Java中》與<<

    public static void num_Function(int n) {
    /*
         >>1表示次數縮小2倍（取整）
         <<1表示次數擴大2倍
    * */
        System.out.println(n >> 1);
        System.out.println(n << 1);
    }

    //10進位制轉化成2進位制後01的個數
    public static void the_01_Number() {
        int i2 = 10;
        int count = 0;//統計十進位制轉換成二進位制後的0、1總個數
        while (i2 > 0) {
            count++;
            i2 >>= 1;
        }
        System.out.println(count);
    }

    //Java character字元操作
    public static void character_Function() {
        Character ch[] = {'a', 'b', 'c', 'a', 'b'};
        Arrays.sort(ch);
        char a = 'a';
        char b = 'b';
        System.out.println(a + b);// character 型的字元遇到 int型的運算子號，就會轉成int型 195
        System.out.println(a + 0);//97
        System.out.println(Arrays.toString(ch));
    }

    public static void main(String[] args) {
        character_Function();
    }
}