Practice Problems (Mixed Code)

Given a day of the week encoded as 0=Sun, 1=Mon, 2=Tue, …6=Sat, and a boolean indicating if we are on vacation, return a string of the form "7:00" indicating when the alarm clock should ring. Weekdays, the alarm should be "7:00" and on the weekend it should be "10:00". Unless we are on vacation – then on weekdays it should be "10:00" and weekends it should be "off".

Example Input	Expected Output
alarmClock(1, false)	7:00
alarmClock(5, false)	7:00
alarmClock(0, false)	10:00

        public class VacayAlarmClock {
   public static String alarmClock(int day, boolean vacation) {
---
      if (day >= 1 && day <= 5 && (vacation == false)){
---
         return "7:00";
---
      } else if ((day == 0 || day == 6 && (vacation == false)) || (day >= 1 && day <= 5 && (vacation == true))){
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         return "10:00";
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      } else {
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         return "off";
---
      }
   }
 }
        

You and your date are trying to get a table at a restaurant. The parameter you is the stylishness of your clothes, in the range 0..10, and date is the stylishness of your date’s clothes. The result getting the table is encoded as an int value with 0=no, 1=maybe, 2=yes. If either of you is very stylish, 8 or more, then the result is 2 (yes). With the exception that if either of you has style of 2 or less, then the result is 0 (no). Otherwise the result is 1 (maybe).

Example Input	Expected Output
dateFashion(5, 10)	2
dateFashion(8, 2)	0
dateFashion(5, 5)	1

        public class DateStylishness {
---
   public static int dateFashion(int you, int date) {
---
      if (you <= 2 || date <= 2) {
---
         return 0; }
---
      if (you >= 8 || date >= 8) {
---
         return 2; }
---
      return 1; }
---
}
        

Create the method front_back(str, start, end) that takes three strings and returns a string based on the following conditions.

• If str contains start at the beginning and end at the end then return "s_e".

• If str contains start at the beginning of the string return "s".

• if str contains end at the end of the string return "e".

• Otherwise return "n".

Example Input	Expected Output
front_back("Open at noon", "Open", "noon")	"s_e"
front_back("Opening time", "Open", "noon")	"s"
front_back("Afternoon", "Open", "noon")	"e"
front_back("Closed", "Open", "noon")	"n"
front_back("It is noon now", "open", "noon")	"n"

        public class FrontBack { #tag:0; depends:;
---
    public static String front_back(String str, String start, String end) { #tag:1; depends:0;
---
       Boolean beginWithStart = str.indexOf(start) == 0;
       Boolean endWithEnd = str.indexOf(end) == (str.length() - end.length()); #tag:2; depends:1;
---
       if (beginWithStart && endWithEnd) { #tag:3; depends:2;
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           return "s_e"; } #tag:4; depends:3;
---
       else if (beginWithStart && !endWithEnd) {
           return "s";} #tag:5; depends:4;
---
       else if (!beginWithStart && endWithEnd) {
           return "e";} #tag:6; depends:4;
---
       else { #tag:7; depends:5,6;
---
           return "n"; #tag:8; depends:7;
---
       } #tag:9; depends:8;
---
    } #tag:10; depends:9;
---
}  #tag:11; depends:10;
        

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