Snap-on Business Solutions Interview Questions and Answers

To read data for m excel, a program can use libraries like pandas or openpyxl.

• Use pandas library to read data from multiple excel files

• Use openpyxl library to read data from a specific excel file

• Specify the file path and sheet name to read data

• Use loops to read data from multiple sheets or files

• Handle errors and exceptions while reading data

Oops concepts are the fundamental concepts of Java programming language.

• Encapsulation - wrapping up of data and methods into a single unit

• Inheritance - acquiring properties of parent class by child class

• Polymorphism - ability of an object to take many forms

• Abstraction - hiding implementation details and showing only necessary information

Return the middle element of a singly linked list, or the one farther from the head if there are even elements.

• Traverse the linked list with two pointers, one moving twice as fast as the other

• When the fast pointer reaches the end, the slow pointer will be at the middle

• If there are even elements, return the one pointed by the slow pointer

Sort an array of strings based on a new alphabetical order starting with a given character.

• Iterate through the array of strings and compare each string based on the new alphabetical order starting with the given character.

• Use a custom comparator function to sort the strings according to the new alphabetical order.

• Return the sorted array of strings.

Check if a given string is a palindrome considering only alphanumeric characters.

• Remove non-alphanumeric characters from the input string.

• Compare the string with its reverse to check for palindrome.

• Handle edge cases like empty string or single character input.