From 267e44a13741ff0756ff46eb5d8e4698e69a65e2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Borba?= <andre.borbaaf2b@gmail.com>
Date: Sat, 19 Sep 2026 09:31:06 -0300
Subject: [PATCH] =?UTF-8?q?=F0=9F=9F=A2=20Port=20problem=2027=20(Remove=20?=
 =?UTF-8?q?Element)=20from=20TypeScript=20to=20C++23?=
MIME-Version: 1.0
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Replaces typescript/removeElement.ts with
solutions/0001-0100/0027-remove-element/.
---
 .../0001-0100/0027-remove-element/README.md    | 12 ++++++++++++
 .../0001-0100/0027-remove-element/solution.cpp | 18 ++++++++++++++++++
 .../0001-0100/0027-remove-element/solution.hpp | 10 ++++++++++
 .../0001-0100/0027-remove-element/test.cpp     | 11 +++++++++++
 typescript/removeElement.ts                    | 11 -----------
 5 files changed, 51 insertions(+), 11 deletions(-)
 create mode 100644 solutions/0001-0100/0027-remove-element/README.md
 create mode 100644 solutions/0001-0100/0027-remove-element/solution.cpp
 create mode 100644 solutions/0001-0100/0027-remove-element/solution.hpp
 create mode 100644 solutions/0001-0100/0027-remove-element/test.cpp
 delete mode 100644 typescript/removeElement.ts

diff --git a/solutions/0001-0100/0027-remove-element/README.md b/solutions/0001-0100/0027-remove-element/README.md
new file mode 100644
index 0000000..5da8b18
--- /dev/null
+++ b/solutions/0001-0100/0027-remove-element/README.md
@@ -0,0 +1,12 @@
+# 27. Remove Element
+
+[LeetCode problem 27](https://leetcode.com/problems/remove-element/)
+
+- **Difficulty**: Easy
+- **Tags**: array, two-pointers
+
+## Description
+
+Given an array `nums` and a value `val`, remove all occurrences of `val` in
+place and return the number of remaining elements `k`; the first `k`
+elements of `nums` must hold the result, in any order.
diff --git a/solutions/0001-0100/0027-remove-element/solution.cpp b/solutions/0001-0100/0027-remove-element/solution.cpp
new file mode 100644
index 0000000..49b6d62
--- /dev/null
+++ b/solutions/0001-0100/0027-remove-element/solution.cpp
@@ -0,0 +1,18 @@
+#include "solution.hpp"
+
+namespace leetcode::p0027 {
+
+int solve(std::vector<int>& nums, int val) {
+    int k = 0;
+
+    for (int num : nums) {
+        if (num != val) {
+            nums.at(static_cast<std::size_t>(k)) = num;
+            ++k;
+        }
+    }
+
+    return k;
+}
+
+} // namespace leetcode::p0027
diff --git a/solutions/0001-0100/0027-remove-element/solution.hpp b/solutions/0001-0100/0027-remove-element/solution.hpp
new file mode 100644
index 0000000..2547a41
--- /dev/null
+++ b/solutions/0001-0100/0027-remove-element/solution.hpp
@@ -0,0 +1,10 @@
+#pragma once
+
+#include <vector>
+
+namespace leetcode::p0027 {
+
+// optimized: O(n) time, O(1) extra space — overwrite in place, one pass.
+int solve(std::vector<int>& nums, int val);
+
+} // namespace leetcode::p0027
diff --git a/solutions/0001-0100/0027-remove-element/test.cpp b/solutions/0001-0100/0027-remove-element/test.cpp
new file mode 100644
index 0000000..d95dd0d
--- /dev/null
+++ b/solutions/0001-0100/0027-remove-element/test.cpp
@@ -0,0 +1,11 @@
+#include <catch2/catch_test_macros.hpp>
+
+#include "solution.hpp"
+
+TEST_CASE("Problem 27", "[p0027]") {
+    std::vector<int> a{3, 2, 2, 3};
+    CHECK(leetcode::p0027::solve(a, 3) == 2);
+
+    std::vector<int> b{0, 1, 2, 2, 3, 0, 4, 2};
+    CHECK(leetcode::p0027::solve(b, 2) == 5);
+}
diff --git a/typescript/removeElement.ts b/typescript/removeElement.ts
deleted file mode 100644
index 986b550..0000000
--- a/typescript/removeElement.ts
+++ /dev/null
@@ -1,11 +0,0 @@
-const removeElement = function(nums: number[], val: number): number {
-    let k: number = 0;
-    for(const num of nums) {
-        if(num !== val) {
-            nums[k] = num;
-            k++;
-        }
-    }
-    
-    return k;
-};