It is a greedy approach where we will form a min-heap of all the lengths of sticks that are given to us. In this approach, we will always find two sticks with minimum length and connect them and add their cost to our answer. Also, we will add the newly formed stick back into our min-heap. And then we will continue to do the same procedure for all the remaining sticks. Since we need to minimize ...

Approach 1 : Naive Recursive Approach

A naive approach is to start from the first element and recursively call for all the elements reachable from first
element. The minimum number of jumps to reach end from first can be calculated using minimum number of jumps
needed to reach end from the elements reachable from first.
minJumps(start, end) = Min ( minJumps(k, end) ) for all k r...

Algorithm : 
1) Create a graph such that there is a edge between each pair of enemies.
2) We need to find that the above graph is bipartite or not. Check whether the graph is 2-colorable or not
3) We can do that by running dfs and using an auxilary array col to store the assigned col of the node.
4) If we can color the graph with two color such that no two enemies have same col...

Approach 1 (Using DP ) :

Observe that , If a chain of length k ends at some pairs[i], and pairs[i][1] < pairs[j][0], we can extend this chain to a chain of length k+1

Steps :
1) Sort the pairs by first coordinate, and let dp[i] be the length of the longest chain ending at pairs[i]. 
2) When i < j and pairs[i][1] < pairs[j][0], we can extend the chain, and so we...

1) TCP or TCP/IP is the Transmission Control Protocol/Internet Protocol. 
2) It is a set of rules that decides how a computer connects to the Internet and how to transmit the data over the network. 
3) It creates a virtual network when more than one computer is connected to the network and uses the three ways handshake model to establish the connection which makes it more reliab...

1) DHCP is the Dynamic Host Configuration Protocol.
2) It is an application layer protocol used to auto-configure devices on IP networks enabling them to use the TCP and UDP-based protocols.
3) The DHCP servers auto-assign the IPs and other network configurations to the devices individually which enables them to communicate over the IP network. 
4) It helps to get the subnet mask,...

Approach : 

Pastebin allows users to store text-based data over the internet for a set period of time and generate a unique URL corresponding uploaded data to share that with anyone. Users who create that data, can also modify it by logging in to the same account. 

Database Schema :

i) users(userID, name, createdAT, metaData)
ii) paste(pasteID, content, URL, cr...

Answer : 
1) Data abstraction is a very important feature of OOPs that allows displaying only the important information and hiding the implementation details. 
2) For example, while riding a bike, you know that if you raise the accelerator, the speed will increase, but you don’t know how it actually happens. 
3) This is data abstraction as the implementation details are ...