Create 155-min-stack.js

Author: everthis

155-min-stack.js

@@ -0,0 +1,48 @@
+/**
+ * initialize your data structure here.
+ */
+const MinStack = function() {
+    this.arr = []
+};
+
+/** 
+ * @param {number} x
+ * @return {void}
+ */
+MinStack.prototype.push = function(x) {
+    this.arr.push(x)
+};
+
+/**
+ * @return {void}
+ */
+MinStack.prototype.pop = function() {
+    this.arr.pop()
+};
+
+/**
+ * @return {number}
+ */
+MinStack.prototype.top = function() {
+    return this.arr[this.arr.length - 1]
+};
+
+/**
+ * @return {number}
+ */
+MinStack.prototype.getMin = function() {
+  let min = Number.MAX_VALUE
+  for(let el of this.arr) {
+    if(el < min) min = el
+  }
+  return min
+};
+
+/** 
+ * Your MinStack object will be instantiated and called as such:
+ * var obj = Object.create(MinStack).createNew()
+ * obj.push(x)
+ * obj.pop()
+ * var param_3 = obj.top()
+ * var param_4 = obj.getMin()
+ */