Update 2296-design-a-text-editor.js

Author: everthis

2296-design-a-text-editor.js

@@ -1,3 +1,76 @@
+const TextEditor = function () {
+  this.stk1 = []
+  this.stk2 = []
+}
+
+/**
+ * @param {string} text
+ * @return {void}
+ */
+TextEditor.prototype.addText = function (text) {
+  for(const ch of text) {
+      this.stk1.push(ch)
+  }
+}
+
+/**
+ * @param {number} k
+ * @return {number}
+ */
+TextEditor.prototype.deleteText = function (k) {
+  let res = 0
+  while(this.stk1.length && k) {
+    k--
+    res++
+    this.stk1.pop()
+  }
+  return res
+}
+
+/**
+ * @param {number} k
+ * @return {string}
+ */
+TextEditor.prototype.cursorLeft = function (k) {
+  let res = ''
+  while(this.stk1.length && k) {
+    const tmp = this.stk1.pop()
+    this.stk2.push(tmp)
+    k--
+  }
+
+
+  for(let len = this.stk1.length, size = Math.min(10, this.stk1.length), i = 0; i < size; i++) {
+    res = this.stk1[len - 1 - i] + res
+  }
+
+  
+  return res
+}
+
+/**
+ * @param {number} k
+ * @return {string}
+ */
+TextEditor.prototype.cursorRight = function (k) {
+  let res = ''
+
+  while(this.stk2.length && k) {
+    const tmp = this.stk2.pop()
+    this.stk1.push(tmp)
+    k--
+  }
+
+  for(let len = this.stk1.length, size = Math.min(10, this.stk1.length), i = 0; i < size; i++) {
+    res = this.stk1[len - 1 - i] + res
+  }
+
+  return res
+}
+
+// another
+
+
 class Node {
   constructor(val) {
     this.val = val