Abhishek Tripathi questions

• Find minimum difference between Max and min element of row made from one element from each column in column wise sorted Matrix
• Merge two data frame with few different columns
• How to get the element from a view-source: page?
• running Xvfb in background on remote linux
• Uploading a JSON file and using it
• How to use document.evaluate() and XPath to get a list of elements?

Abhishek Tripathi answers