Example: Input: words = maxWidth = 16 Output: This question can be divided into 2 different parts. In the first part, we need to check how many words can be fit into a single line. In the second part, determine the space to be inserted between …

In the previous question, we wanted to know if there is a cycle. But in this question we want to know the node from where the cycle begins. For example: 1 -> 2 -> 3 ->4 ->3 Entrance of the cycle is 3. The steps …

Solution Explanation: Take an extra pointer “fast” and assign its starting point to head. Every iteration moves the “fast” pointer 2 steps forward and “head” pointer 1 step forward. At certain point, if there is a cycle, both “head” and “fast” pointer will meet at the …

Example 1: Input: s = "applepenapple", wordDict = Output: true Explanation: "applepenapple" can be seperated as "apple pen apple". This problem can be solved by using DP . We shall have a look at the code, before explaining the code. Solution in C++ #include<iostream> …

Example 1: Input: Output: 3 We can solve this by 2 methods: unordered_map XOR operation. The solution for “unordered_map” is same as the solution for “single-number”. Below explains in details about the solution using BIT Manipulation. If the problem were this: “one element appears once, all …