Data Structure

• Arrays
  • Replace All Elements with Zero in an Array
  • Sum of Elements at Even Indices
  • Sum of Elements at Odd Indices
  • Find the Average of Array Elements
  • Count the Number of Zeros in an Array
  • Move All Zeros to the End of an Array
  • Rotate an Array by K Positions
  • Rotate an Array by One Position
  • Insert an Element at a Given Position in an Array
  • Delete an Element from a Given Position in an Array
  • Find the Index of an Element in an Array
  • Find Union of Two Arrays
  • Find Intersection of Two Arrays
  • Sort an Array of 0s and 1s
  • Find the Largest Sum Contiguous Subarray (Kadane’s Algorithm – Intro)
  • Kadane’s Algorithm (Maximum Subarray Sum)
  • Two Sum Problem
  • Subarray with Given Sum
  • Longest Subarray with Sum K
  • Rearrange Array Alternately (Max–Min)
  • Leaders in an Array
  • Equilibrium Index of an Array
  • Stock Buy and Sell (Single Transaction)
  • Find the Second Smallest Element in an Array
  • Find the Second Largest Element in an Array