fixed issue with delete operator on stacks (TheAlgorithms#218)

harishsambasivam · web-flow · commit 8a9ea57f0144 · 2020-07-24T09:38:56.000+05:30
* fixed issue with delete operator 

using delete operator in arrays ,element remains undefined. so splice is the clean way to do that

* Fixed the semicolon and let errors

* Update Stack.js
diff --git a/Data-Structures/Stack/Stack.js b/Data-Structures/Stack/Stack.js
@@ -30,7 +30,7 @@ var Stack = (function () {
 
     this.top--
     var result = this.stack[this.top]
-    delete this.stack[this.top]
+    this.stack = this.stack.splice(0, this.top)
     return result
   }
 

Original file line number	Diff line number	Diff line change
`@@ -30,7 +30,7 @@ var Stack = (function () {`
`30`	`30`
`31`	`31`	`this.top--`
`32`	`32`	`var result = this.stack[this.top]`
`33`		`- delete this.stack[this.top]`
	`33`	`+ this.stack = this.stack.splice(0, this.top)`
`34`	`34`	`return result`
`35`	`35`	`}`
`36`	`36`