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+[![Review Assignment Due Date](https://classroom.github.com/assets/deadline-readme-button-22041afd0340ce965d47ae6ef1cefeee28c7c493a6346c4f15d667ab976d596c.svg)](https://classroom.github.com/a/kXPMD09E)
 # Grade 11 Java Review
 
 ## Instructions

src/gr11review/part1/Review1.java

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 package gr11review.part1;
+
+import java.io.*;
+
+/**
+ * A program that takes the month number and the day number to calculate
+ * the amount of days that have passed in the year (assuming no leap year)
+ * 
+ * @author: R. Shi
+ *
+ */
+public class Review1 {
+    public static void main(String[] args) throws IOException {
+        // declare reader
+        BufferedReader scan = new BufferedReader(new InputStreamReader(System.in));
+
+        // declare variables
+        int intMonth;
+        int intMonths[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
+        int intDay;
+        int intDaynum = 0;
+
+        // get variables from user
+        System.out.print("Enter the month number: ");
+        intMonth = Integer.parseInt(scan.readLine());
+        System.out.print("Enter the day number: ");
+        intDay = Integer.parseInt(scan.readLine());
+
+        // add months
+        for (int i = 0; i < intMonth - 1; i++) {
+            intDaynum = intDaynum + intMonths[i];
+        }
+
+        // print final result
+        System.out.println(intDaynum + intDay);
+    }
+}

src/gr11review/part1/Review2.java

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 package gr11review.part1;
+
+import java.io.*;
+
+/**
+ * A simple program to output a joke based on an input between 0-3
+ * 
+ * @author: R. Shi
+ *
+ */
+public class Review2 {
+    public static void main(String[] args) throws IOException {
+
+        // declare reader
+        BufferedReader scan = new BufferedReader(new InputStreamReader(System.in));
+
+        // declare variables
+        int intInput;
+
+        // menu choice + get input from user
+        System.out.println("0 - print a joke about your hair");
+        System.out.println("1 - print a joke about your feet");
+        System.out.println("2 - print a joke about your clothes");
+        System.out.println("3 - print a joke about your teacher");
+        System.out.print("Choose a menu option: ");
+        intInput = Integer.parseInt(scan.readLine());
+
+        // decision making tree with switch case
+        switch (intInput) {
+            case 0:
+                System.out.println("Why did the barber come first in the race to finish cutting hair the fastest? Because he had taken a short cut!");
+                break;
+            case 1:
+                System.out.println("What's a foot's favourite chocolate? Toe-blerone!");
+                break;
+            case 2:
+                System.out.println("What did the policeman say to the criminal who hid in a laundry basket? You're under a vest!");
+                break;
+            case 3:
+                System.out.println("Teacher: If I had 8 oranges in one hand and 10 apples in the other hand, what would I have? Student: Big hands!");
+                break;
+            default:
+                System.out.println("Invalid menu option");
+                break;
+        }
+    }
+}

src/gr11review/part1/Review3.java

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 package gr11review.part1;
+
+import java.io.*;
+
+/**
+ * A simple program to print the odd numbers between 20-100
+ * then print the numbers between 29-2 in descending order.
+ * 
+ * @author: R. Shi
+ *
+ */
+public class Review3 {
+    public static void main(String[] args) throws IOException {
+
+        // print odd numbers between 20-100
+        for (int i = 20; i < 100; i++) {
+            if (i % 2 == 1) {
+                System.out.println(i);
+            }
+        }
+
+        // print numbers beteen 29-2 in descending order
+        System.out.println();
+        for (int i = 29; i >= 2; i--) {
+            System.out.println(i);
+        }
+    }
+}

src/gr11review/part1/Review4.java

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 package gr11review.part1;
+
+import java.io.*;
+import java.text.DecimalFormat;
+
+/**
+ * A simple program to take a certain amount of items as well as the price, then
+ * calculate the subtotal, the tax, and the total of all the items.
+ * 
+ * @author: R. Shi
+ *
+ */
+
+public class Review4 {
+    public static void main(String[] args) throws IOException {
+        // declare reader and format
+        BufferedReader scan = new BufferedReader(new InputStreamReader(System.in));
+        DecimalFormat format = new DecimalFormat("0.00");
+
+        // declare variables
+        int intItems;
+        double dblSubtotal = 0;
+
+        // get amount of items from user
+        System.out.print("How many items do you want to buy? ");
+        intItems = Integer.parseInt(scan.readLine());
+
+        // loop to get each item's price
+        for (int i = 0; i < intItems; i++) {
+            System.out.print("Enter the price for item " + (i + 1) + ": ");
+            dblSubtotal = dblSubtotal + Double.parseDouble(scan.readLine());
+        }
+
+        // print totals
+        System.out.println("Subtotal: $" + format.format(dblSubtotal));
+        System.out.println("Tax: $" + format.format(dblSubtotal * 0.13));
+        System.out.println("Total: $" + format.format(dblSubtotal * 1.13));
+    }
+}

src/gr11review/part1/Review5.java

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 package gr11review.part1;
+
+import java.io.*;
+
+/**
+ * A simple program to compute how many years it takes to earn a certain amount
+ * of money
+ * given the interest rate and the yearly invested amount
+ * 
+ * @author: R. Shi
+ *
+ */
+public class Review5 {
+    public static void main(String[] args) throws IOException {
+        // declare reader
+        BufferedReader scan = new BufferedReader(new InputStreamReader(System.in));
+
+        // declare variables
+        double dblYearly;
+        double dblInterest;
+        double dblTarget;
+        double dblMoney = 0;
+        int intYears = 0;
+
+        // take variables from user (yearly invested amount, compound interest rate, target amount)
+        System.out.print("Enter the yearly invested amount: ");
+        dblYearly = Double.parseDouble(scan.readLine());
+
+        System.out.print("Enter the compound interest rate: ");
+        dblInterest = Double.parseDouble(scan.readLine());
+
+        System.out.print("Enter the target amount: ");
+        dblTarget = Double.parseDouble(scan.readLine());
+
+        // while the money is less than the target, simulate a year of interest+investment
+        while (dblMoney < dblTarget) {
+            dblMoney = (dblMoney + dblYearly) * (dblInterest / 100 + 1);
+            intYears = intYears + 1;
+        }
+
+        // print final result
+        System.out.println("The target amount will be earned in " + intYears + " years.");
+    }
+
+}

src/gr11review/part1/Review6.java

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 package gr11review.part1;
+
+import java.io.*;
+import java.text.DecimalFormat;
+
+/**
+ * A simple program to compute the price, tax, and total after tax of a list of
+ * items
+ * 
+ * @author: R. Shi
+ *
+ */
+public class Review6 {
+
+    public static void main(String[] args) throws IOException {
+        //
+        // declare reader
+        BufferedReader scan = new BufferedReader(new InputStreamReader(System.in));
+        DecimalFormat format = new DecimalFormat("0.00");
+
+        // declare variables
+        double dblPrice = 0;
+        double dblSubtotal = 0;
+
+        // take input and add it to price until 0 is entered
+        do {
+            System.out.print("Enter the price for an item: ");
+            dblPrice = Double.parseDouble(scan.readLine());
+            dblSubtotal = dblSubtotal + dblPrice;
+        } while (dblPrice != 0);
+
+        // print results
+        System.out.println("Subtotal: $" + format.format(dblSubtotal));
+        System.out.println("Tax: $" + format.format((dblSubtotal * 0.13)));
+        System.out.println("Total: $" + format.format((dblSubtotal * 1.13)));
+    }
+}

src/gr11review/part1/Review7.java

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 package gr11review.part1;
+
+import java.io.*;
+
+
+/**
+ * A simple program to count the characters, amount of times the letter a
+ * appears, and how many spaces are in a string
+ * 
+ * @author: R. Shi
+ *
+ */
+
+public class Review7 {
+    public static void main(String[] args) throws IOException {
+
+        // declare reader
+        BufferedReader scan = new BufferedReader(new InputStreamReader(System.in));
+
+        // declare variables
+        String strInput;
+        int intCharacters = 0;
+        int intSpaces = 0;
+        int intA = 0;
+        String strDash = "";
+
+        // take sentence from user
+        strInput = scan.readLine();
+
+        // iterate through the string
+        for (int i = 0; i < strInput.length(); i++) {
+
+            // if string at i is "a" count it
+            if (strInput.substring(i, i + 1).equals("a")) {
+
+                intA++;
+            }
+            // if string at i is " " count it
+            if (strInput.substring(i, i + 1).equals(" ")) {
+
+                intSpaces++;
+            }
+            if (i % 2 == 0) {
+                strDash = strDash + "-";
+            }
+            // count characters
+            intCharacters++;
+        }
+
+        // print results
+        System.out.println("There are " + intCharacters + " characters in the sentence.");
+        System.out.println("There are " + intSpaces + " spaces in the sentence.");
+        System.out.println("There are " + intA + " letter a in the sentence.");
+        System.out.println(strDash);
+    }
+}

src/gr11review/part1/Review8.java

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 package gr11review.part1;
+
+import java.io.*;
+import java.math.*;
+
+/**
+ * A simple program to simulate 1000 slot pulls from 0-9 with 3 digits, and
+ * count how many times 3 of the same digit comes up
+ * 
+ * @author: R. Shi
+ *
+ */
+public class Review8 {
+
+    public static void main(String[] args) throws IOException {
+        // declare reader
+
+        // declare variables
+        int int1;
+        int int2;
+        int int3;
+        int intTriple = 0;
+
+        // loop 1000 times
+        for (int i = 0; i < 1000; i++) {
+
+            // generate 3 random numbers
+            int1 = (int) (Math.random() * 10);
+            int2 = (int) (Math.random() * 10);
+            int3 = (int) (Math.random() * 10);
+
+            // print the 3 random numbers
+            System.out.println(int1 + " " + int2 + " " + int3);
+
+            // if it's a triple count it
+            if (int1 == int2 && int2 == int3) {
+                intTriple++;
+            }
+        }
+
+        // print amount of triples
+        System.out.println(intTriple);
+
+    }
+}