Two Code : Q.1 Sort stack in place. Q.2 Recursively reverse Linked List Round 1 : Q.1 : Explain and discussion on both Codes, especially on sorting stack. Q.2 : Loop in Lined List, why Incrementing fast pointer as thrice may not work : Q.3 : Find Nearest Minimum number in left side in O(n) : Q.4 : Puzzle for 4abcd=dcba, solve a,b,c,d values : Q.5 : Left view of Binary Tree, and how to solve issue when two branches intersect etc. Q.6 : Difference of code for finding minimum value in a. sorted rotated array b. merged array from two sorted arrays. Q.7 : Present work, issues solved in backend and forntend in details.