11 Essential Coding Interview Questions The following problems are introduced in the Udemy course by CS Dojo, "11 Essential Coding Interview Questions." Arrays Find the most frequent element in an array Find the common elements in two sorted arrays Is one array a rotation of another? Strings Non-Repeating Character One Away Strings Two-Dimensional Arrays Assign Numbers in Minesweeper Find Where to Expand in Minesweeper Rotating a 2D Array by 90 Degrees (In Place) Linked Lists and Trees N-th Element of a Linked List Is This a Binary Search Tree? Lowest Common Ancestor