# Status Problem video Level Completes Likes 87 Find Intersection of Two Sorted Arrays Beginner % 0 86 Find Kth Smallest or Largest element in an Array Medium % 0 85 Find Maximum Distance Between Increasing Elements in Array Medium % 0 84 Elements in an Array Occurring More Than N/K Times Hard % 0 83 Find Element in Rotated Sorted Array Medium % 0 58 Generate All String Permutations Hard % 0 57 Sort an Array According to the Order Defined by Another Array Medium % 0 56 Sort an Array - odd numbers appear first in ascending order followed by the even numbers in descending order. Medium % 0 53 Count occurrences of a number in a sorted array Medium % 0 52 Find Common Numbers in Three Sorted Arrays Beginner % 0 50 Find the first repeated element in an array by its index Medium % 0 49 Find the Unreachable Minimum in Array Subsets Medium % 0 41 Sorted Array to Binary Search Tree of Minimal Height Medium % 1 19 Exploring All Paths, Including Diagonal, from Top Left to Bottom Right in 2D Array Medium % 1 18 All Paths from Top Left to Bottom Right in 2D Array Medium % 0 15 Efficiently Rearrange Positive and Negative Numbers in Array on Each Side Hard % 0 14 Longest Shared Prefix Sequence in a String Medium % 0 13 Print All Elements of Two Dimensional Array in Spiral Order Medium % 0 12 Efficient Methods to Find Pairs with Sum K in an Array Beginner % 0 10 Quick Sort Implementation Medium % 0 8 Efficient Search in 2D Sorted Array: Find an Element Medium % 0 7 Determine If a String is Palindrome Beginner % 0 6 Find a peak element in a Given Array Beginner % 0 5 Find two Missing Numbers in a Sequence of Consecutive Numbers Beginner % 0 4 Find a Missing Number From a Sequence of Consecutive Numbers Beginner % 0 2 Merge Sort - Updated - Most Efficient ways to Implement Medium % 1 1 Binary Search Beginner % 0 Find Intersection of Two Sorted Arrays Find Kth Smallest or Largest element in an Array Find Maximum Distance Between Increasing Elements in Array Elements in an Array Occurring More Than N/K Times Find Element in Rotated Sorted Array Generate All String Permutations Sort an Array According to the Order Defined by Another Array Sort an Array - odd numbers appear first in ascending order followed by the even numbers in descending order. Count occurrences of a number in a sorted array Find Common Numbers in Three Sorted Arrays Find the first repeated element in an array by its index Find the Unreachable Minimum in Array Subsets Sorted Array to Binary Search Tree of Minimal Height Exploring All Paths, Including Diagonal, from Top Left to Bottom Right in 2D Array All Paths from Top Left to Bottom Right in 2D Array Efficiently Rearrange Positive and Negative Numbers in Array on Each Side Longest Shared Prefix Sequence in a String Print All Elements of Two Dimensional Array in Spiral Order Efficient Methods to Find Pairs with Sum K in an Array Quick Sort Implementation Efficient Search in 2D Sorted Array: Find an Element Determine If a String is Palindrome Find a peak element in a Given Array Find two Missing Numbers in a Sequence of Consecutive Numbers Find a Missing Number From a Sequence of Consecutive Numbers Merge Sort - Updated - Most Efficient ways to Implement Binary Search 1 2 3 4 5 6