Write to file in Java

This tutorial would be focusing on different ways of write to file using Java. Stream is a general mechanism of I/O in java. Stream provides sequential access of data. An input stream can be used by an application to read data. An output stream to write data. A file, network connection, arrays can act as […]

Read More

how hashmap works java

HashMap in Java

What is Hashing? Hashing is a mechanism to convert one value to another. The process which performs this transformation is called the ‘Hash Function’. The input to the hash function is normally called as the ‘Key’ and this could be any value which can be converted to a String. The output or the hashed value […]

Read More

Convert a string representing a duration, ie: 300ms, 20s, etc to to nanoseconds

Suppose you have a string in your application that has the duration of time using ns, us ms , s h, d. And you want to convert them all to nano seconds, then utility will of great help to you.

Read More

Longest Palindromic Subsequence – Leetcode Java

Given a string s, find the longest palindromic subsequence’s length in s. You may assume that the maximum length of s is 1000. Example 1: Input:

Output:

One possible longest palindromic subsequence is “bbbb”. Example 2: Input:

Output:

One possible longest palindromic subsequence is “bb”. Java Solution

  You can […]

Read More

Frontend interview questions

Questions you may get asked: 10 Interview Questions Every JavaScript Developer Should Know Front-End Job Interview Questions Front End Web Development Quiz Interview Questions for Front-End-Developer JavaScript Web Quiz Questions you ask: An open source list of developer questions to ask prospective employers Preparing: Preparing for a Front-End Web Development Interview in 2017 Interview Cake  — […]

Read More