forked from prabirmsp/csc207-the-string-class
/
StringExercises.java
64 lines (58 loc) · 1.79 KB
/
StringExercises.java
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import java.util.*;
public class StringExercises {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println(forgivingPrompt("Are you 18 years old?"));
System.out.println();
System.out.println(parseName("Turing,Alan,Mathison"));
System.out.println();
System.out.println(add("0+31+4+81+9+10"));
}
public static boolean forgivingPrompt(String question) {
System.out.println(question);
Scanner scanner = new Scanner(System.in);
String answer = scanner.next();
if (answer.toLowerCase().equals("y") ||
answer.toLowerCase().equals("yes") ||
answer.toLowerCase().equals("yep"))
return true;
if (answer.toLowerCase().equals("n") ||
answer.toLowerCase().equals("no") ||
answer.toLowerCase().equals("nope"))
return false;
System.out.println("Invalid input, try again");
return forgivingPrompt(question);
}
public static String parseName(String s) {
String lastName = "";
String firstName = "";
String middleName = "";
String tempStr = s;
int j = 0;
for (j = 0; tempStr.charAt(j) != ','; j++);
lastName = tempStr.substring(0, j);
tempStr = tempStr.substring(++j);
for (j = 0; tempStr.charAt(j) != ','; j++);
firstName = tempStr.substring(0, j);
middleName = tempStr.substring(++j);
return firstName + " " + middleName + " " + lastName;
}
public static int add(String line) {
if (line.isEmpty())
return 0;
String number = "";
int i = 0;
int startIndex = 0;
int endIndex = 0;
for (i = 0; i < line.length(); i++)
if (Character.isDigit(line.charAt(i)))
startIndex = i;
for (; i < line.length() && Character.isDigit(line.charAt(i)); i++);
endIndex = i;
number = line.substring(--startIndex, endIndex);
return Integer.parseInt(number) + add(line.substring(endIndex));
}
}