//let's add letterGrade method to Grade class that prints the letter corresponding to the grade.
// here is the letter grade scheme:
//g>=90 A+
//80<= g <90 A
//70<= g <80 B
//60<= g <70 C
//50<= g <60 D
// g<50  F

Grades.letterGrade(85)
Grades.letterGrade(5)
Grades.letterGrade(50)
Grades.letterGrade(95)
//what number to test letterGrade to make sure it's correct?
//0, 50, 51, 60, 61, 70, 71, 80, 81, 90, 91




//For assignment 2, you need String process
//spliting a string into some "tokens"

import java.util.StringTokenizer;
import java.util.*;
StringTokenizer st = new StringTokenizer("Today is Thursday.");

st.nextToken()
st.nextToken()
st.nextToken()
st.nextToken()


// delimiter: character that separates the tokens
// default delimiters: " \t\n\r\f"
// \t: tab
// \n: newline
// \r: carriage return (moves cursor to first position on line)
// \f: line feed (moves cursor down to next line)

st = new StringTokenizer("Today\tis\tThursday.");
st.nextToken()
st.nextToken()
st.nextToken()
st.nextToken()

st = new StringTokenizer("Today\t      \t  \t  is        Thursday.");
st.nextToken()
st.nextToken()
st.nextToken()
st.nextToken()
//number of white space does not matter! it skips all

st = new StringTokenizer("Today is Thursday.");
st.countTokens()  //number of avaialbe tokens


//you may want a different delimiters. For example ";"
StringTokenizer st2 = new StringTokenizer("John Patt; Mary Adam; Henry Hanks", ";");
st2.countTokens()
st2.hasMoreTokens()
st2.nextToken()
st2.countTokens()
st2.hasMoreTokens()
st2.nextToken()
st2.countTokens()
st2.hasMoreTokens()

//giving a list of delimeters (will split if any of these characters are seen)
StringTokenizer st3 = new StringTokenizer("John,Patt; Mary, Adam; Henry, Hanks",",;");
st3.countTokens()
st3.nextToken()
st3.nextToken()
st3.nextToken()
st3.nextToken()

st2 = new StringTokenizer("John Patt; Mary Adam; Henry Hanks", ";");
while(st2.hasMoreTokens) {
    System.out.println(st3.nextToken());
  }

st3 = new StringTokenizer("John,Patt; Mary, Adam; Henry, Hanks",",;");
while(st3.hasMoreTokens()) {
    System.out.println(st3.nextToken());