From 7c6e71c7520440fd6d77b1cfccd2dc709ab0c6e1 Mon Sep 17 00:00:00 2001
From: Alexey <gradiviro@gmail.com>
Date: Mon, 27 Jul 2020 17:18:08 +0300
Subject: [PATCH 1/4] second task solution

---
 src/main/java/core/basesyntax/BooleanExpression.java | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/main/java/core/basesyntax/BooleanExpression.java b/src/main/java/core/basesyntax/BooleanExpression.java
index f8cfc8e..cc49df2 100644
--- a/src/main/java/core/basesyntax/BooleanExpression.java
+++ b/src/main/java/core/basesyntax/BooleanExpression.java
@@ -13,7 +13,10 @@ public class BooleanExpression {
      * <p>Это задание необходимо решать с использованием логических операторов,
      * без использования конструкций if-else</p>
      */
+
     public boolean booleanExpression(boolean a, boolean b, boolean c, boolean d) {
-        return false;
+        return (!a || !b || !c || !d) && (((a && b) && (!c && !d))
+                || ((!a && !b) && (c && d))
+                || ((a != b) && (c != d)) ? true : false);
     }
 }

From cd34ecf81ead5457408fe8b15b96661e43e59bc3 Mon Sep 17 00:00:00 2001
From: Alexey <gradiviro@gmail.com>
Date: Mon, 27 Jul 2020 17:24:14 +0300
Subject: [PATCH 2/4] second task solution

---
 src/main/java/core/basesyntax/BooleanExpression.java | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/main/java/core/basesyntax/BooleanExpression.java b/src/main/java/core/basesyntax/BooleanExpression.java
index cc49df2..5e289aa 100644
--- a/src/main/java/core/basesyntax/BooleanExpression.java
+++ b/src/main/java/core/basesyntax/BooleanExpression.java
@@ -13,7 +13,6 @@ public class BooleanExpression {
      * <p>Это задание необходимо решать с использованием логических операторов,
      * без использования конструкций if-else</p>
      */
-
     public boolean booleanExpression(boolean a, boolean b, boolean c, boolean d) {
         return (!a || !b || !c || !d) && (((a && b) && (!c && !d))
                 || ((!a && !b) && (c && d))

From a1aa9ef9a24b4f99d1ee264ba05a460acf054498 Mon Sep 17 00:00:00 2001
From: Alexey <gradiviro@gmail.com>
Date: Mon, 27 Jul 2020 17:48:25 +0300
Subject: [PATCH 3/4] second task solution edited

---
 src/main/java/core/basesyntax/BooleanExpression.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/core/basesyntax/BooleanExpression.java b/src/main/java/core/basesyntax/BooleanExpression.java
index 5e289aa..d6b4acc 100644
--- a/src/main/java/core/basesyntax/BooleanExpression.java
+++ b/src/main/java/core/basesyntax/BooleanExpression.java
@@ -16,6 +16,6 @@ public class BooleanExpression {
     public boolean booleanExpression(boolean a, boolean b, boolean c, boolean d) {
         return (!a || !b || !c || !d) && (((a && b) && (!c && !d))
                 || ((!a && !b) && (c && d))
-                || ((a != b) && (c != d)) ? true : false);
+                || ((a != b) && (c != d)));
     }
 }

From c2712b5e3e3f7e45e4b216c66eab5350b8d7a28a Mon Sep 17 00:00:00 2001
From: Alexey <gradiviro@gmail.com>
Date: Mon, 27 Jul 2020 17:54:42 +0300
Subject: [PATCH 4/4] second task solution edited

---
 src/main/java/core/basesyntax/BooleanExpression.java | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/main/java/core/basesyntax/BooleanExpression.java b/src/main/java/core/basesyntax/BooleanExpression.java
index d6b4acc..7025c0c 100644
--- a/src/main/java/core/basesyntax/BooleanExpression.java
+++ b/src/main/java/core/basesyntax/BooleanExpression.java
@@ -14,8 +14,6 @@ public class BooleanExpression {
      * без использования конструкций if-else</p>
      */
     public boolean booleanExpression(boolean a, boolean b, boolean c, boolean d) {
-        return (!a || !b || !c || !d) && (((a && b) && (!c && !d))
-                || ((!a && !b) && (c && d))
-                || ((a != b) && (c != d)));
+        return ((a ^ c) && (b ^ d)) || ((a ^ d) && (b ^ c));
     }
 }