From a98965216ef45bde8c7767002ae52cea6aa14e04 Mon Sep 17 00:00:00 2001
From: rbhargav0104 <by7785@srmist.edu.in>
Date: Sun, 11 Jan 2026 18:45:01 +0530
Subject: [PATCH] Completed Two-Pointers-1

---
 containerwithmostwater.cpp | 22 ++++++++++++++++++++++
 sortcolours.cpp            | 28 ++++++++++++++++++++++++++++
 threesum.cpp               |  0
 3 files changed, 50 insertions(+)
 create mode 100644 containerwithmostwater.cpp
 create mode 100644 sortcolours.cpp
 create mode 100644 threesum.cpp

diff --git a/containerwithmostwater.cpp b/containerwithmostwater.cpp
new file mode 100644
index 00000000..3885a4e1
--- /dev/null
+++ b/containerwithmostwater.cpp
@@ -0,0 +1,22 @@
+class Solution {
+public:
+    int maxArea(vector<int>& height) {
+        int n = height.size();
+        int maximum = 0;
+        //declare a left pointer and a right pointer
+        int lpointer = 0;
+        int rpointer = n - 1;
+
+        while(lpointer < rpointer){//making sure left doesnt cross right
+            int currArea = min(height[lpointer], height[rpointer]) * (rpointer - lpointer);//min of height at left anf right multiplied by width gives us the area
+            maximum = max(maximum , currArea);//compare previous maximum and curr area and update
+            if(height[lpointer] < height[rpointer]){
+                lpointer ++;
+            }else{
+                rpointer--;
+            }
+        } 
+
+        return maximum;
+    }
+};
\ No newline at end of file
diff --git a/sortcolours.cpp b/sortcolours.cpp
new file mode 100644
index 00000000..b08304ac
--- /dev/null
+++ b/sortcolours.cpp
@@ -0,0 +1,28 @@
+class Solution {
+public:
+    void sortColors(vector<int>& nums) {
+        int n = nums.size();
+        int left = 0;
+        int mid = 0;
+        int right = n-1;
+        while(mid <= right){
+            if(nums[mid] == 2){
+                swap(nums,mid,right);
+                right--;
+            }else if(nums[mid] == 0){
+                swap(nums,mid,left);
+                left++;
+                mid++;
+            }else{
+                mid++;
+            }
+        }
+    }
+
+private:
+    void swap(vector<int>& nums, int mid, int idx) {
+    int temp = nums[idx];
+    nums[idx] = nums[mid];
+    nums[mid] = temp;
+}
+};
\ No newline at end of file
diff --git a/threesum.cpp b/threesum.cpp
new file mode 100644
index 00000000..e69de29b