From 98b24d8e5e45be20cfc4295083c326d8842b959a Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Sun, 27 Nov 2016 15:50:26 +0200
Subject: [PATCH 01/23] t1 done

---
 .../lemon/changerequest/java/introduction/hw1/Task1.java       | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task1.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task1.java
index 3bed9e0..2c16cee 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task1.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task1.java
@@ -3,6 +3,7 @@
 
 public class Task1 {
     public static double calculateP(double a) {
-        return 0;
+
+        return 4 * a;
     }
 }

From e503c11fe1fa4ef011590abc450a54d1b7f8de48 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Sun, 27 Nov 2016 15:55:12 +0200
Subject: [PATCH 02/23] t2 done

---
 .../lemon/changerequest/java/introduction/hw1/Task2.java       | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task2.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task2.java
index a4578a5..db2e97d 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task2.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task2.java
@@ -3,6 +3,7 @@
 
 public class Task2 {
     public static int getMeters(int centimeters) {
-        return 0;
+
+        return centimeters / 100;
     }
 }

From acc3464c515ae71eae4356ad3214a33dda3b8754 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Sun, 27 Nov 2016 15:56:49 +0200
Subject: [PATCH 03/23] t2 done

---
 .../school/lemon/changerequest/java/introduction/hw1/Task2.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task2.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task2.java
index db2e97d..06c4c69 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task2.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task2.java
@@ -6,4 +6,4 @@ public static int getMeters(int centimeters) {
 
         return centimeters / 100;
     }
-}
+}
\ No newline at end of file

From 8799a43a0c9f59b66bff9ff2325a17a0cbacdf48 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Sun, 27 Nov 2016 15:58:11 +0200
Subject: [PATCH 04/23] t3 done

---
 .../lemon/changerequest/java/introduction/hw1/Task3.java   | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java
index 49f98de..049d6c7 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java
@@ -2,6 +2,11 @@
 
 public class Task3 {
     public static boolean isBetween(int a, int b, int c) {
-        return false;
+
+        if ((a <= b && b <= c) || (a >= b && b >= c)) {
+            return true;
+        } else {
+            return false;
+        }
     }
 }

From 7f837c1d5828aae551dbada3856c55a88a46dd2f Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Sun, 27 Nov 2016 15:59:32 +0200
Subject: [PATCH 05/23] t3 done

---
 .../school/lemon/changerequest/java/introduction/hw1/Task3.java  | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java
index 049d6c7..dd5e1d1 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java
@@ -10,3 +10,4 @@ public static boolean isBetween(int a, int b, int c) {
         }
     }
 }
+

From 37593efc978c548d09eca093712a7c821ea576a9 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Sun, 27 Nov 2016 16:52:45 +0200
Subject: [PATCH 06/23] t4 done

---
 .../changerequest/java/introduction/hw1/Task4.java | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task4.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task4.java
index 1b2c077..1c51cb4 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task4.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task4.java
@@ -4,6 +4,16 @@
 public class Task4 {
 
     public static double getSumOfGreatest(double a, double b, double c) {
-        return 0;
-    }
+            if (a < b && b < c) {
+            return c + b;
+            }
+                 if (a > b && b > c) {
+                    return b + a;
+                 }
+                else {
+                    return a + c;
+                 }
+
+
+        }
 }

From b75ec08c1bab59fb9951b24145a3e0d41653d913 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Sun, 27 Nov 2016 17:11:25 +0200
Subject: [PATCH 07/23] t5 done

---
 .../lemon/changerequest/java/introduction/hw1/Task5.java      | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task5.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task5.java
index 25bfde5..88331c8 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task5.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task5.java
@@ -3,10 +3,10 @@
 
 public class Task5 {
     public static double calculateA(double x, double y, double z) {
-        return 0;
+        return ((2 * Math.sin(x - Math.PI / 6) * calculateB(z)) / (1 / 2.0 + (Math.pow(Math.sin(y), 2))));
     }
 
     private static double calculateB(double z) {
-        return 0;
+        return 1 + (Math.pow(z, 2)) / (3 + ((Math.pow(z, 2)) / 5));
     }
 }

From 8700a086fc10d34a92fd236199dc6c3184d89d93 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Sun, 27 Nov 2016 17:59:48 +0200
Subject: [PATCH 08/23] t6 done

---
 .../lemon/changerequest/java/introduction/hw1/Task6.java | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java
index 5db16c9..bc1ea5e 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java
@@ -2,10 +2,13 @@
 
 public class Task6 {
     public static double calculateS(double x) {
-        return 0d;
-    }
+        return (1 + (x * (((Math.pow(x, 2) *x) *x) / (2 * (3*2) * (4*3*2)))));
+
+        }
+
 
     public static double calculateZ(double x, double y) {
-        return 0d;
+
+        return Math.sin(Math.pow(x, 3)) + Math.pow(Math.cos(y), 2);
     }
 }

From 019f61871246316fdf3724eacc66dfcf1cbdf9e8 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Sun, 27 Nov 2016 18:12:17 +0200
Subject: [PATCH 09/23] t7 done

---
 .../java/introduction/hw1/Task7.java          | 38 ++++++++++++++++++-
 1 file changed, 37 insertions(+), 1 deletion(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java
index 7d39c57..d7e5878 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java
@@ -3,6 +3,42 @@
 
 public class Task7 {
     public static String getDayTitle(int dayIndex) {
-        return "";
+        String dayNumber;
+        switch (dayIndex)
+        {
+            case 1:
+                dayNumber = "Monday";
+                break;
+
+            case 2:
+                dayNumber = "Tuesday";
+                break;
+
+            case 3:
+                dayNumber = "Wednesday";
+                break;
+
+            case 4:
+                dayNumber = "Thursday";
+                break;
+
+            case 5:
+                dayNumber = "Friday";
+                break;
+
+            case 6:
+                dayNumber = "Saturday";
+                break;
+
+            case 7:
+                dayNumber = "Sunday";
+                break;
+
+            default:
+                dayNumber = "Error";
+                break;
+        }
+        return dayNumber;
+
     }
 }

From 81b9696e99a3030d00c7a5a4193615821fe234d6 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Sun, 27 Nov 2016 19:08:31 +0200
Subject: [PATCH 10/23] t8 done

---
 .../lemon/changerequest/java/introduction/hw1/Task3.java   | 7 ++-----
 .../lemon/changerequest/java/introduction/hw1/Task8.java   | 6 +++++-
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java
index dd5e1d1..10b885e 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java
@@ -3,11 +3,8 @@
 public class Task3 {
     public static boolean isBetween(int a, int b, int c) {
 
-        if ((a <= b && b <= c) || (a >= b && b >= c)) {
-            return true;
-        } else {
-            return false;
-        }
+        if ((a <= b && b <= c) || (a >= b && b >= c)) return true;
+        else return false;
     }
 }
 
diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task8.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task8.java
index 927306f..378c4c1 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task8.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task8.java
@@ -2,6 +2,10 @@
 
 public class Task8 {
     public static int calculateSum(int N) {
-        return 0;
+        int result = 0;
+        int i;
+        for (i = N; 2 * N >= i; i++)
+            result = (int) (i + Math.pow((2 * N), 2));
+        return result;
     }
 }

From ee4caf7b3cdc8f0cdd5830b8933c3e10184b4017 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Sun, 27 Nov 2016 20:33:41 +0200
Subject: [PATCH 11/23] t9done

---
 .../changerequest/java/introduction/hw1/Task9.java  | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task9.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task9.java
index f17d372..5d16fca 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task9.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task9.java
@@ -3,6 +3,15 @@
 public class Task9 {
 
     public static boolean isPowerOfThree(int n) {
-        return false;
-    }
+
+        if (n < 1){
+            return false;
+        }
+
+        while (n % 3 == 0) {
+            boolean b = (n / 3) == 3;
+        }
+            return true;
+     }
 }
+

From 3aed8cb801b92fb76ae570e936861fdb23105909 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Sun, 27 Nov 2016 20:43:42 +0200
Subject: [PATCH 12/23] t10done

---
 .../lemon/changerequest/java/introduction/hw1/Task10.java  | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task10.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task10.java
index 1f87d43..a5ea9df 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task10.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task10.java
@@ -4,6 +4,13 @@
 public class Task10 {
 
     public static boolean containDigitTwo(int n) {
+
+        while (n > 0) {
+            if (n % 10 == 2)
+            if (n / 10 == 10) {
+                return true;
+            }
+        }
         return false;
     }
 }

From 2baea2ac284b25051877648b0a0191be1e805e47 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Sun, 27 Nov 2016 22:01:01 +0200
Subject: [PATCH 13/23] t7_corrected

---
 .../java/introduction/hw1/Task7.java          | 28 +++++++------------
 1 file changed, 10 insertions(+), 18 deletions(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java
index d7e5878..b82aa00 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java
@@ -3,42 +3,34 @@
 
 public class Task7 {
     public static String getDayTitle(int dayIndex) {
-        String dayNumber;
+
         switch (dayIndex)
         {
             case 1:
-                dayNumber = "Monday";
-                break;
+                return "Monday";
 
             case 2:
-                dayNumber = "Tuesday";
-                break;
+                return "Tuesday";
 
             case 3:
-                dayNumber = "Wednesday";
-                break;
+                return  "Wednesday";
 
             case 4:
-                dayNumber = "Thursday";
-                break;
+                return "Thursday";
 
             case 5:
-                dayNumber = "Friday";
-                break;
+                return "Friday";
 
             case 6:
-                dayNumber = "Saturday";
-                break;
+                return "Saturday";
 
             case 7:
-                dayNumber = "Sunday";
-                break;
+                return "Sunday";
 
             default:
-                dayNumber = "Error";
-                break;
+                return  "Error";
         }
-        return dayNumber;
+
 
     }
 }

From 2171f98be77d9a667e78816abd1f5208fbf601f6 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Sun, 27 Nov 2016 22:05:03 +0200
Subject: [PATCH 14/23] t4_corrected

---
 .../lemon/changerequest/java/introduction/hw1/Task4.java      | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task4.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task4.java
index 1c51cb4..a9ce944 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task4.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task4.java
@@ -13,7 +13,5 @@ public static double getSumOfGreatest(double a, double b, double c) {
                 else {
                     return a + c;
                  }
-
-
         }
-}
+}
\ No newline at end of file

From 4abd5c1124241887b2d695eeff628694e4f66692 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Mon, 28 Nov 2016 12:13:55 +0200
Subject: [PATCH 15/23] t3_corrected

---
 .../lemon/changerequest/java/introduction/hw1/Task3.java      | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java
index 10b885e..bb97a35 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task3.java
@@ -3,8 +3,8 @@
 public class Task3 {
     public static boolean isBetween(int a, int b, int c) {
 
-        if ((a <= b && b <= c) || (a >= b && b >= c)) return true;
-        else return false;
+        return  ((a <= b && b <= c) || (a >= b && b >= c));
+
     }
 }
 

From cb12feba2b3d7b6cf472173a06c635d400ea8d55 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Mon, 28 Nov 2016 12:47:43 +0200
Subject: [PATCH 16/23] t10_corrected

---
 .../lemon/changerequest/java/introduction/hw1/Task10.java   | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task10.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task10.java
index a5ea9df..d272add 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task10.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task10.java
@@ -6,11 +6,13 @@ public class Task10 {
     public static boolean containDigitTwo(int n) {
 
         while (n > 0) {
-            if (n % 10 == 2)
-            if (n / 10 == 10) {
+            if (n % 10 == 2) {
                 return true;
             }
+             n = n / 10;
+
         }
+
         return false;
     }
 }

From 479aac08a9fc77b59d56531f4dcb8a7c13d1186b Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Mon, 28 Nov 2016 12:49:17 +0200
Subject: [PATCH 17/23] t9_corrected

---
 .../school/lemon/changerequest/java/introduction/hw1/Task9.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task9.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task9.java
index 5d16fca..2d67fb2 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task9.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task9.java
@@ -9,7 +9,7 @@ public static boolean isPowerOfThree(int n) {
         }
 
         while (n % 3 == 0) {
-            boolean b = (n / 3) == 3;
+            n = n / 3;
         }
             return true;
      }

From d142eb7a182f23f3b09d3683d47bac5896f59330 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Mon, 28 Nov 2016 13:20:50 +0200
Subject: [PATCH 18/23] t6_corrected

---
 .../lemon/changerequest/java/introduction/hw1/Task6.java  | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java
index bc1ea5e..737fef5 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java
@@ -2,10 +2,16 @@
 
 public class Task6 {
     public static double calculateS(double x) {
-        return (1 + (x * (((Math.pow(x, 2) *x) *x) / (2 * (3*2) * (4*3*2)))));
+        return (1 + (x * (((Math.pow(x, 2) *x) *x) / (factorial(2)*factorial(3)*factorial(4)))));
 
         }
 
+    private static int factorial(int n) {
+        for (int i = 1; i <= n; i++) {
+            n = n * i;
+            }
+            return n;
+    }
 
     public static double calculateZ(double x, double y) {
 

From 262edc97e5f19992f5d8621fbe4fdecde83a9267 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Mon, 28 Nov 2016 14:07:19 +0200
Subject: [PATCH 19/23] T6_corrected2

---
 .../school/lemon/changerequest/java/introduction/hw1/Task6.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java
index 737fef5..7ffafd2 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java
@@ -2,7 +2,7 @@
 
 public class Task6 {
     public static double calculateS(double x) {
-        return (1 + (x * (((Math.pow(x, 2) *x) *x) / (factorial(2)*factorial(3)*factorial(4)))));
+        return (1 + x + (Math.pow(x, 2)/factorial(2)) + (Math.pow(x, 3)/factorial(3)) + (Math.pow(x, 4)/factorial(4)));
 
         }
 

From 716187b11277aeafe892158637f3e0b54c39f593 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Mon, 28 Nov 2016 15:21:52 +0200
Subject: [PATCH 20/23] T6_corrected

---
 .../lemon/changerequest/java/introduction/hw1/Task6.java   | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java
index 7ffafd2..560a6ed 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task6.java
@@ -7,10 +7,11 @@ public static double calculateS(double x) {
         }
 
     private static int factorial(int n) {
-        for (int i = 1; i <= n; i++) {
-            n = n * i;
+        int result = 1;
+        for (int i = n; i > 0; i--) {
+            result = result * i;
             }
-            return n;
+            return result;
     }
 
     public static double calculateZ(double x, double y) {

From 6235854854b8bdf067a5c0f8f880ce6a7a329a18 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Thu, 1 Dec 2016 18:31:13 +0200
Subject: [PATCH 21/23] T6_fixed err

---
 .../school/lemon/changerequest/java/introduction/hw1/Task7.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java
index b82aa00..e59e90f 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java
@@ -28,7 +28,7 @@ public static String getDayTitle(int dayIndex) {
                 return "Sunday";
 
             default:
-                return  "Error";
+                return  "error";
         }
 
 

From b2e70d11bc87a76b477361a3d42d464bfae749d9 Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Thu, 1 Dec 2016 18:55:33 +0200
Subject: [PATCH 22/23] T9_fixed

---
 .../lemon/changerequest/java/introduction/hw1/Task8.java    | 6 +++---
 .../lemon/changerequest/java/introduction/hw1/Task9.java    | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task8.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task8.java
index 378c4c1..75ee594 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task8.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task8.java
@@ -3,9 +3,9 @@
 public class Task8 {
     public static int calculateSum(int N) {
         int result = 0;
-        int i;
-        for (i = N; 2 * N >= i; i++)
-            result = (int) (i + Math.pow((2 * N), 2));
+
+        for (int i = N; 2 * N >= i; i++)
+            result+= i*i;
         return result;
     }
 }
diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task9.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task9.java
index 2d67fb2..2ed062d 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task9.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task9.java
@@ -4,14 +4,14 @@ public class Task9 {
 
     public static boolean isPowerOfThree(int n) {
 
-        if (n < 1){
+        if (n <= 1){
             return false;
         }
 
-        while (n % 3 == 0) {
+        while (n>1 && (n % 3) == 0) {
             n = n / 3;
         }
-            return true;
+            return n == 1;
      }
 }
 

From 178929e7ef514f0c773e74bfa35d52de2090c84c Mon Sep 17 00:00:00 2001
From: Olga Berezhna <berezhna.o.a@gmail.com>
Date: Thu, 1 Dec 2016 18:56:50 +0200
Subject: [PATCH 23/23] T7_fixed err

---
 .../school/lemon/changerequest/java/introduction/hw1/Task7.java  | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java
index e59e90f..4b68119 100644
--- a/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java
+++ b/src/main/java/school/lemon/changerequest/java/introduction/hw1/Task7.java
@@ -31,6 +31,5 @@ public static String getDayTitle(int dayIndex) {
                 return  "error";
         }
 
-
     }
 }