From 069b4fa3d175319056a2f3f17e31b642e98f1331 Mon Sep 17 00:00:00 2001
From: temzor <onewaykd@gmail.com>
Date: Wed, 29 Nov 2023 12:15:51 +0300
Subject: [PATCH] =?UTF-8?q?8.=20=D0=A7=D1=82=D0=BE=20=D1=82=D0=B0=D0=BA?=
 =?UTF-8?q?=D0=BE=D0=B5=20=D0=B2=D0=B0=D0=BB=D0=B8=D0=B4=D0=B0=D1=86=D0=B8?=
 =?UTF-8?q?=D1=8F=3F;=20https://job4j.ru/profile/exercise/22/task-view/162?=
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Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/main/java/ru/j4j/tracker/Tracker.java     | 12 ++++++-----
 src/main/java/ru/j4j/validate/DivByZero.java  | 21 +++++++++++++++++++
 src/test/java/ru/j4j/tracker/TrackerTest.java |  4 ----
 3 files changed, 28 insertions(+), 9 deletions(-)
 create mode 100644 src/main/java/ru/j4j/validate/DivByZero.java

diff --git a/src/main/java/ru/j4j/tracker/Tracker.java b/src/main/java/ru/j4j/tracker/Tracker.java
index fa206c0..3a2c71b 100644
--- a/src/main/java/ru/j4j/tracker/Tracker.java
+++ b/src/main/java/ru/j4j/tracker/Tracker.java
@@ -37,12 +37,12 @@ public Item findById(int id) {
 
     public boolean replace(int id, Item item) {
         int index = indexOf(id);
-        if (index != -1) {
+        boolean rsl = index != -1;
+        if (rsl) {
             item.setId(id);
             items[index] = item;
-            return true;
         }
-        return false;
+        return rsl;
     }
 
     public int indexOf(int id) {
@@ -56,12 +56,14 @@ public int indexOf(int id) {
         return rsl;
     }
 
-    public void delete(int id) {
+    public boolean delete(int id) {
         int index = indexOf(id);
-        if (index != -1) {
+        boolean rsl = index != -1;
+        if (rsl) {
             System.arraycopy(items, index + 1, items, index, size - index - 1);
             items[size - 1] = null;
             size--;
         }
+        return rsl;
     }
 }
\ No newline at end of file
diff --git a/src/main/java/ru/j4j/validate/DivByZero.java b/src/main/java/ru/j4j/validate/DivByZero.java
new file mode 100644
index 0000000..524fa0a
--- /dev/null
+++ b/src/main/java/ru/j4j/validate/DivByZero.java
@@ -0,0 +1,21 @@
+package ru.j4j.validate;
+
+public class DivByZero {
+    public static int div(int first, int second) {
+        int rsl = -1;
+        if (second == 0) {
+            System.out.println("Div by 0, return def value -1");
+        } else {
+            rsl = first / second;
+        }
+        return rsl;
+    }
+
+    public static void main(String[] args) {
+        int rsl = div(10, 5);
+        System.out.println(rsl);
+
+        int rsl1 = div(10, 0);
+        System.out.println(rsl1);
+    }
+}
diff --git a/src/test/java/ru/j4j/tracker/TrackerTest.java b/src/test/java/ru/j4j/tracker/TrackerTest.java
index 000cd18..d65cf04 100644
--- a/src/test/java/ru/j4j/tracker/TrackerTest.java
+++ b/src/test/java/ru/j4j/tracker/TrackerTest.java
@@ -61,10 +61,6 @@ public void whenReplaceItemIsSuccessful() {
         int id = item.getId();
         Item updateItem = new Item("Bug with description");
         tracker.replace(id, updateItem);
-        System.out.println(item.getId());
-        System.out.println(tracker.indexOf(id));
-        System.out.println(tracker.findById(id));
-        System.out.println(item.getId() == id);
         assertThat(tracker.findById(id).getName()).isEqualTo("Bug with description");
     }