solves min stack

Author: anishLearnsToCode

README.md

@@ -47,7 +47,7 @@
 | 125 | [Valid Palindrome](https://leetcode.com/problems/valid-palindrome) | Easy | [![Java](https://img.icons8.com/color/40/000000/java-coffee-cup-logo.png)](https://github.com/anishLearnsToCode/leetcode-algorithms/blob/master/src/ValidPalindrome.java) |
 | 136 | [Single Number](https://leetcode.com/problems/single-number) | Easy | [![Java](https://img.icons8.com/color/40/000000/java-coffee-cup-logo.png)](https://github.com/anishLearnsToCode/leetcode-algorithms/blob/master/src/SingleNumber.java) | 
 | 141 | [Linked List Cycle](https://leetcode.com/problems/linked-list-cycle) | Easy | [![Java](https://img.icons8.com/color/40/000000/java-coffee-cup-logo.png)](https://github.com/anishLearnsToCode/leetcode-algorithms/blob/master/src/LinkedListCycle.java) | 
-| 155 | [Min Stack](https://leetcode.com/problems/min-stack) | Easy |
+| 155 | [Min Stack](https://leetcode.com/problems/min-stack) | Easy | 
 | 157 | [Read N Characters Given Read4](https://leetcode.com/problems/read-n-characters-given-read4) | Easy |
 | 160 | [Intersection of Two Linked Lists](https://leetcode.com/problems/intersection-of-two-linked-lists) | Easy |
 | 167 | [Two Sum II - Input Array is Sorted](https://leetcode.com/problems/two-sum-ii-input-array-is-sorted) | Easy |

src/MinStack.java

@@ -0,0 +1,31 @@
+import java.util.ArrayList;
+import java.util.List;
+
+public class MinStack {
+
+    private final List<Integer> numbers = new ArrayList<>();
+
+    /** initialize your data structure here. */
+    public MinStack() {
+    }
+
+    public void push(int x) {
+        numbers.add(x);
+    }
+
+    public void pop() {
+        numbers.remove(numbers.size() - 1);
+    }
+
+    public int top() {
+        return numbers.get(numbers.size() - 1);
+    }
+
+    public int getMin() {
+        int min = Integer.MAX_VALUE;
+        for (int element : numbers) {
+            min = Math.min(min, element);
+        }
+        return min;
+    }
+}