diff --git a/1ano/2semestre/poo/out/production/poo/tp_codecheck/tp02/Array1.md b/1ano/2semestre/poo/out/production/poo/tp_codecheck/tp02/Array1.md
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+# Exercícios de Arrays
+
+## Ex1
+```java
+final int LENGHT = 100;
+int[] a = new int[LENGHT];
+// Code for filling a ommited
+for (int = 99; i >= 0; i--)
+{
+    System.out.print(a[i]);
+    if (i > 0) { System.out.print(', '); }
+}
+```
+
+## Ex2
+```java
+int[] numbers = new int[100];
+for (int k = 0; k < numbers.length; k++)
+{
+   numbers[k] = k + 1;
+}
+```
+
diff --git a/1ano/2semestre/poo/out/production/poo/tp_codecheck/tp02/NumberOfDays.class b/1ano/2semestre/poo/out/production/poo/tp_codecheck/tp02/NumberOfDays.class
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diff --git a/1ano/2semestre/poo/out/production/poo/tp_codecheck/tp02/Numbers.class b/1ano/2semestre/poo/out/production/poo/tp_codecheck/tp02/Numbers.class
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diff --git a/1ano/2semestre/poo/src/tp_codecheck/tp02/Array1.md b/1ano/2semestre/poo/src/tp_codecheck/tp02/Array1.md
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+# Exercícios de Arrays
+
+## Ex1
+```java
+final int LENGHT = 100;
+int[] a = new int[LENGHT];
+// Code for filling a ommited
+for (int = 99; i >= 0; i--)
+{
+    System.out.print(a[i]);
+    if (i > 0) { System.out.print(', '); }
+}
+```
+
+## Ex2
+```java
+int[] numbers = new int[100];
+for (int k = 0; k < numbers.length; k++)
+{
+   numbers[k] = k + 1;
+}
+```
+
diff --git a/1ano/2semestre/poo/src/tp_codecheck/tp02/NumberOfDays.java b/1ano/2semestre/poo/src/tp_codecheck/tp02/NumberOfDays.java
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+++ b/1ano/2semestre/poo/src/tp_codecheck/tp02/NumberOfDays.java
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+package tp_codecheck.tp02;
+
+import java.util.Scanner;
+
+public class NumberOfDays {
+    public static void main(String[] args)
+    {
+        // Declare and initialize daysOfMonth
+        int[] daysOfMonth = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+
+        Scanner in = new Scanner(System.in);
+        System.out.print("Month (1 - 12): ");
+        int month = in.nextInt();
+        System.out.print("Year: ");
+        int year = in.nextInt();
+
+        if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
+            // It's a leap year. Adjust the entry for February
+            daysOfMonth[1]+=1;
+        }
+
+        // Get the number of days in the given month
+        int days = daysOfMonth[month-1];
+
+        System.out.println("Number of days: " + days);
+    }
+}
diff --git a/1ano/2semestre/poo/src/tp_codecheck/tp02/Numbers.java b/1ano/2semestre/poo/src/tp_codecheck/tp02/Numbers.java
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+++ b/1ano/2semestre/poo/src/tp_codecheck/tp02/Numbers.java
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+package tp_codecheck.tp02;
+
+public class Numbers {
+    public static void main(String[] args) {
+        // Different arrays will be substituted here.
+        int[] values = { 3, 1, 4, 1, 5, 9 };
+        int[] newValues = new int[values.length/2];
+        
+        for (int x = 0; x < values.length; x+=2) {
+            newValues[x/2] = values[x];
+        }
+        
+        for (int i = 0; i < newValues.length; i++) {
+            System.out.println(newValues[i]);
+        }
+    }
+}