Q1. Print following pattern according to array Array = [2,6,3,8,-2,11, -4] Output: ## ###### ### ######## ## ########### #### 2.From an unsorted array, check whether there are any two numbers that will sum up to a given number? [6,4,3,2,1,7] 9 3. Merge Sort 4. Binary Search Questions related to the time complexity Some puzzles