OJ_simple_10.08.txt

一、String转换成int的方法
String str = "10";
Integer it = new Interger(str);

int i = it.intValue();

即：int i = Integer.intValue(string);


二、int转换成String

int i = 10;

(1)String s = String.valueOf(i);

(2)String s = Ingeger.toString(i);

(3)String s = "" + i;



7. Words
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str = sc.nextLine();
        String[] str_array = str.split(“ “);
        double total_length = 0;
        for (String s : str_array) {
            int length = s.length();

            total_length = total_length + length;
        }
        double weight = total_length / str_array.length;
        String str_weight = String.format(“%.2f”, weight);
        System.out.println(str_weight);
    }
}

13、Table

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    while (sc.hasNext()) {
        int n = sc.nextInt();
        int m = sc.nextInt();
        for (int i = 0; i < n; i ++) {
            StringBuffer sb1 = new StringBuffer();
            StringBuffer sb2 = new StringBuffer();
            sb1.append("+");
            sb2.append("|");
            for (int j = 0; j < m; j ++) {
                sb1.append("---");
                sb1.append("+");
                sb2.append("   |");
            }
            System.out.println(sb1.toString());
            System.out.println(sb2.toString());
        }
        StringBuffer sb = new StringBuffer();
        sb.append("+");