Add Ex_27.09

Author: jsquared21

Exercise_27/Exercise_27_09/.smbdeleteAAA02634.4

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+/*********************************************************************************
+* (Implement hashCode for string) Write a method that returns a hash code for    *
+* string using the approach described in Section 27.3.2 with b value 31. The     *
+* function header is as follows:                                                 *
+*                                                                                *
+* public static int hashCodeForString(String s)                                  *
+*********************************************************************************/
+public class Exercise_27_09 {
+	public static void main(String[] args) {
+		
+	}
+}

Exercise_27/Exercise_27_09/Exercise_27_09.class

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+/*********************************************************************************
+* (Implement hashCode for string) Write a method that returns a hash code for    *
+* string using the approach described in Section 27.3.2 with b value 31. The     *
+* function header is as follows:                                                 *
+*                                                                                *
+* public static int hashCodeForString(String s)                                  *
+*********************************************************************************/
+public class Exercise_27_09 {
+	public static void main(String[] args) {
+		// Create a list if string
+		String[] list = {"Mark", "Smith", "tops", "pots", "tod", "dot"};
+
+		// Print the hash code for each string
+		for (String e : list) {
+			System.out.println("The hash code for \"" + e +
+				"\" is " + hashCodeForString(e));
+		}
+
+	}
+
+	/** Retrun the hash code for string */
+	public static int hashCodeForString(String s) {
+		int b = 31;
+		int hashCode = 0;
+		for (int i = 0; i < s.length(); i++) { 
+			hashCode = b * hashCode + (int)s.charAt(i); 
+		}
+		return hashCode;
+	}
+}