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

Author: everthis

2296-design-a-text-editor.js

@@ -8,9 +8,7 @@ const TextEditor = function () {
  * @return {void}
  */
 TextEditor.prototype.addText = function (text) {
-  for(const ch of text) {
-      this.stk1.push(ch)
-  }
+  for (const ch of text) this.stk1.push(ch)
 }
 
 /**
@@ -19,7 +17,7 @@ TextEditor.prototype.addText = function (text) {
  */
 TextEditor.prototype.deleteText = function (k) {
   let res = 0
-  while(this.stk1.length && k) {
+  while (this.stk1.length && k) {
     k--
     res++
     this.stk1.pop()
@@ -33,19 +31,13 @@ TextEditor.prototype.deleteText = function (k) {
  */
 TextEditor.prototype.cursorLeft = function (k) {
   let res = ''
-  while(this.stk1.length && k) {
+  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
+  return this.slice()
 }
 
 /**
@@ -55,16 +47,24 @@ TextEditor.prototype.cursorLeft = function (k) {
 TextEditor.prototype.cursorRight = function (k) {
   let res = ''
 
-  while(this.stk2.length && k) {
+  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 this.slice()
+}
 
+TextEditor.prototype.slice = function() {
+  let res = ''
+  for (
+    let len = this.stk1.length, size = Math.min(10, this.stk1.length), i = 0;
+    i < size;
+    i++
+  ) {
+    res = this.stk1[len - i - 1] + res
+  }
   return res
 }