Java Program : write a method to check if it is well formed expression. Eg: {[()]}

This question was asked in an interview that I found interesting.

Here you go.

I know, There are other ways to do it better.

                Map<Character, Character> exprssionMap = new HashMap<>();
exprssionMap.put('{', '}');
exprssionMap.put('[', ']');
exprssionMap.put('(', ')');

String inputExpression = "{[({{)}}]}";
int expressionLengh = inputExpression.length();
if (expressionLengh % 2 == 1) {
System.out.println("malformed Expression; Size of the Expression is not even                                           number");
} else {
for (int i = 0; i < expressionLengh / 2; i++) {
if (!exprssionMap.get(inputExpression.charAt(i))
.equals(inputExpression.charAt(expressionLengh - 1 - i))) {
System.out.println(
"Matching expression not found for: " +                                                                                                    inputExpression.charAt(i) + "; index:" + i);
}
}
}

Happy Coding.

Selenium Question

-          Assume, given web application contains 10 dynamic text boxes.

-          Text box placing/location will also changes dynamically.

-          Now we need to key in text in one specific text box, which does not contain any unique locator ( We are not able to find out uniqueness with partial text too )

How you do you achieve this?                                                  

Analysis:

-          No unique ID , tool tip, value, css style, etc.

-          We are not able to draw unique ness with partial ID / text / value / etc

Tip:

-          Only one control is having unique ID and whose position is dynamic.

      

  Idea:

-          Can we use below Xpath selectors

AxisName	Result
ancestor	Selects all ancestors (parent, grandparent, etc.) of the current node
ancestor-or-self	Selects all ancestors (parent, grandparent, etc.) of the current node and the current node itself
attribute	Selects all attributes of the current node
child	Selects all children of the current node
descendant	Selects all descendants (children, grandchildren, etc.) of the current node
descendant-or-self	Selects all descendants (children, grandchildren, etc.) of the current node and the current node itself
following	Selects everything in the document after the closing tag of the current node
following-sibling	Selects all siblings after the current node
namespace	Selects all namespace nodes of the current node
parent	Selects the parent of the current node
preceding	Selects all nodes that appear before the current node in the document, except ancestors, attribute nodes and namespace nodes
preceding-sibling	Selects all siblings before the current node
self	Selects the current node

Examples:

Example	Result
child::book	Selects all book nodes that are children of the current node
attribute::lang	Selects the lang attribute of the current node
child::*	Selects all element children of the current node
attribute::*	Selects all attributes of the current node
child::text()	Selects all text node children of the current node
child::node()	Selects all children of the current node
descendant::book	Selects all book descendants of the current node
ancestor::book	Selects all book ancestors of the current node
ancestor-or-self::book	Selects all book ancestors of the current node - and the current as well if it is a book node
child::*/child::price	Selects all price grandchildren of the current node

Examples:

//td[text() = ' Color Digest ']/following-sibling::td[2]

//h2[contains(text(),'Hello')]/parent::div//div[//a[text()='SELENIUM']]/following-sibling::div[@class='rt-grid-2']