Interview Questions and Answers for 'Wize commerce' | Search Interview Question

Interview Questions and Answers for 'Wize commerce' - 2 question(s) found - Order By Newest

Q1. Write a method to check if input String is Palindrome?

Ans. private static boolean isPalindrome(String str) {

if (str == null)
return false;

StringBuilder strBuilder = new StringBuilder(str);

strBuilder.reverse();

return strBuilder.toString().equals(str);

}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve java string stringbuilder stringbuilder string class code palindrome Asked in 38 Companies Basic frequent}

Related Questions

Which keyword is used to provide explicit access of a code block to single thread ?

a. Transient
b. Final
c. Explicit
d. Synchronized

How does volatile affect code optimization by compiler?

Will this code give error if i try to add two heterogeneous elements in the arraylist. ? and Why ?

What is the difference between the following two code lines ?

1. new OuterClass().new InnerClass();

2. new OuterClass.InnerClass();

Which String class does not override the equals() and hashCode() methods, inheriting them directly from class Object?

If arrays cannot be resized , Why is this code valid

String[] strArray = new String[2];
strArray = new String[5];

Will the static block be executed in the following code ? Why ?

If you are given a choice to implement the code to either Insert a Record or Update if already exist, Which approach will you follow ?

Which of the following is not the advantage of Mocking frameworks ?

How can we make sure that a code segment gets executed even in case of uncatched exceptions ?

Q2. What is a self Join and give an example of a self Join ?

or

What is self Join and What is it's purpose ?

Database

Ans. When a Table Join itself , it's a Self Join. For example - we like to know the pair of department names where first dept has lesser employees than the later.

Select D1.name , D2.name from Dept D1, Dept D2 where D1.employee_count < D2.employee_count

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve sql joins self join self-join Pair of employee names with first having lesser salary than later Pair of department names where first dept has lesser employees than the later Asked in 26 Companies basic frequent}

Related Questions

What are Inner , Outer , Left and Right Joins in SQL ?

What is JDBC? Describe the steps needed to execute a SQL query using JDBC.

What are temp tables ?

Do you like Native SQL Apis like JDBC or JPA / Hibernate ?

Is there any schema in mongo DB ?

Difference between Inner and Outer Join ?

What is a Cursor ?

Does SQL allow null values ? Can we use it within Where clause ?

Write an SQL to find all records having all upper case alphanumeric characters in a field ?

Search Interview Questions

Help us and Others Improve. Please let us know the questions asked in any of your previous interview.