From 8c412a4198880414c24d2d2105ddd74c76a7ab48 Mon Sep 17 00:00:00 2001
From: Rfontt <ritadecassia.infor2@gmail.com>
Date: Thu, 11 Dec 2025 21:44:17 -0300
Subject: [PATCH 1/3] feat: add reverse_integer

---
 .../reverse_integer.cpp                       | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 operations_on_datastructures/reverse_integer.cpp

diff --git a/operations_on_datastructures/reverse_integer.cpp b/operations_on_datastructures/reverse_integer.cpp
new file mode 100644
index 00000000000..e1df9ac3fd4
--- /dev/null
+++ b/operations_on_datastructures/reverse_integer.cpp
@@ -0,0 +1,47 @@
+/**
+ * @file
+ * @brief Provides a function to reverse the digits of a 32-bit integer safely.
+ *
+ * This implementation reverses the digits of an integer while preventing
+ * overflow by checking limits against INT32_MAX and INT32_MIN.
+ *
+ * @author [Rfontt](https://github.com/Rfontt)
+ */
+
+#include <iostream>
+#include <limits>
+
+/**
+ * @brief Reverses the digits of a 32-bit signed integer.
+ *
+ * This function extracts digits one by one from the input integer and builds
+ * the reversed number. Before each multiplication and addition, it checks
+ * whether the operation would overflow a 32-bit signed integer. If an overflow
+ * would occur, the function returns 0.
+ *
+ * @param number The integer whose digits will be reversed.
+ * @return The reversed integer, or 0 if the reversal would overflow.
+ */
+int reverse(int number) {
+    int32_t reversed = 0;
+
+    while (number != 0) {
+        int digit = number % 10;
+
+        if (reversed > INT32_MAX / 10 || reversed < INT32_MIN / 10) {
+            return 0;
+        }
+
+        reversed = reversed * 10 + digit;
+
+        number = number / 10;
+    }
+
+    return reversed;
+}
+
+int main() {
+    int reversed = reverse(123);
+
+    std::cout << "Number reversed: " << reversed << "\n";
+}

From 4863562ca2e8c22a6d2bfc40c1fbf773617e4ed8 Mon Sep 17 00:00:00 2001
From: Rfontt <ritadecassia.infor2@gmail.com>
Date: Thu, 11 Dec 2025 21:56:32 -0300
Subject: [PATCH 2/3] feat: adding tests

---
 operations_on_datastructures/reverse_integer  | Bin 0 -> 38800 bytes
 .../reverse_integer.cpp                       |  34 ++++++++++++++++--
 2 files changed, 32 insertions(+), 2 deletions(-)
 create mode 100755 operations_on_datastructures/reverse_integer

diff --git a/operations_on_datastructures/reverse_integer b/operations_on_datastructures/reverse_integer
new file mode 100755
index 0000000000000000000000000000000000000000..379f94b4a1625902ebf3198d7243900a8e5b1ee6
GIT binary patch
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diff --git a/operations_on_datastructures/reverse_integer.cpp b/operations_on_datastructures/reverse_integer.cpp
index e1df9ac3fd4..9b9332feed7 100644
--- a/operations_on_datastructures/reverse_integer.cpp
+++ b/operations_on_datastructures/reverse_integer.cpp
@@ -8,6 +8,7 @@
  * @author [Rfontt](https://github.com/Rfontt)
  */
 
+#include <cassert>
 #include <iostream>
 #include <limits>
 
@@ -40,8 +41,37 @@ int reverse(int number) {
     return reversed;
 }
 
+void test() {
+    // Positive numbers
+    assert(reverse(123) == 321);
+    assert(reverse(1) == 1);
+    assert(reverse(10) == 1);
+
+    // Negative numbers
+    assert(reverse(-123) == -321);
+    assert(reverse(-10) == -1);
+
+    // Edge cases
+    assert(reverse(0) == 0);
+
+    // Reverse of 1534236469 would overflow 32-bit
+    assert(reverse(1534236469) == 0);
+
+    // Reverse of INT32_MAX (2147483647) also overflows
+    assert(reverse(std::numeric_limits<int>::max()) == 0);
+
+    // Reverse of INT32_MIN (−2147483648) also overflows
+    assert(reverse(std::numeric_limits<int>::min()) == 0);
+
+    // Palindromes
+    assert(reverse(1221) == 1221);
+    assert(reverse(-1221) == -1221);
+
+    std::cout << "All tests passed!\n";
+}
+
 int main() {
-    int reversed = reverse(123);
+    test();
 
-    std::cout << "Number reversed: " << reversed << "\n";
+    return 0;
 }

From c2250269f2ed3fe7804cab415af64e68a7052e81 Mon Sep 17 00:00:00 2001
From: Rfontt <ritadecassia.infor2@gmail.com>
Date: Thu, 11 Dec 2025 22:00:45 -0300
Subject: [PATCH 3/3] docs: Documentation changes

---
 operations_on_datastructures/reverse_integer    | Bin 38800 -> 0 bytes
 .../reverse_integer.cpp                         |   8 ++++++++
 2 files changed, 8 insertions(+)
 delete mode 100755 operations_on_datastructures/reverse_integer

diff --git a/operations_on_datastructures/reverse_integer b/operations_on_datastructures/reverse_integer
deleted file mode 100755
index 379f94b4a1625902ebf3198d7243900a8e5b1ee6..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

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diff --git a/operations_on_datastructures/reverse_integer.cpp b/operations_on_datastructures/reverse_integer.cpp
index 9b9332feed7..f98e09c3815 100644
--- a/operations_on_datastructures/reverse_integer.cpp
+++ b/operations_on_datastructures/reverse_integer.cpp
@@ -41,6 +41,10 @@ int reverse(int number) {
     return reversed;
 }
 
+/**
+ * @brief Self-test implementations
+ * @returns void
+ */
 void test() {
     // Positive numbers
     assert(reverse(123) == 321);
@@ -70,6 +74,10 @@ void test() {
     std::cout << "All tests passed!\n";
 }
 
+/**
+ * @brief Main function
+ * @returns 0 on exit
+ */
 int main() {
     test();