Amazon

1. Four Elements Sum2. Rotten Oranges3. Digit Count [How many X's]4. Save Ironman5. Closest Palindrome6. Check Array Contains Contigous Integer7. Pairs with Positive and Negative Values8. Maximum Tip Calculator9. Prime Number of Set Bits10. Reverse Each Word in String11. Find k-th character in string12. Star Elements13. Common Subsequence14. Chocolate Station15. First and Last Occurances in Sorted Array16. Number of Groups17. Count the Elements18. Find Pair such that [ a+b = c+d ]19. Group Anagrams Together20. Game With Strings21. Extract Maximum22. Element with left side smaller and right side greater23. Smallest Positive Missing Number24. Maximum Money25. Fill Array with 1's26. Longest Palindromic Subsequence27. Smallest window in a string containing all the characters of another string28. Water Overflow29. Geek and Coffee Shop30. Number with Same First and Last Digit31. Find All pairs with Given Sum32. Equal Point in String of Brackets33. Stepping Numbers34. First Non-Repeating Character in stream35. Unique Numbers36. Rearrange Characters37. Game of XOR38. Type of Array39. First and Last Occurance of x40. Find Whether Path Exists41. Total Number of Strings42. Minimum Cost of Ropes43. Sum of Query II44. Count ways to reach the n’th stair45. Length of the longest substring without repeating characters.46. Count triplets with sum smaller than X47. Maximum of minimum for every window size48. String Twice Counter49. Keypad Typing50. Generate Binary Numbers51. Palindromic Array52. Count ways to N'th Stair(Order does not matter)53. Rotate Array by n elements54. Maximum Sum Rectangle55. Is Sudoku Valid56. Maximize No. of Ones by Flipping at most M Zeros57. Betting Game58. Maximum of j - i subjected to the constraint of A[i] <= A[j]59. Overlapping intervals60. Sum of two numbers represented as arrays

Microsoft

1. Combination Sum2. Merge two Sorted Array Decreasing Order3. Unique Subsets4. Ease the Array5. M Coloring Problem6. Count Occurences of Anagrams7. Longest Distinct characters in string8. Print Pattern Without Loop9. Palindrome Numbers [Binary Representation]10. RegEx Matching11. Length of largest region of 1's12. Find all four sum numbers13. Phone Directory Suggestion14. Boolean String Value15. Difficulty of sentence16. Valid Tic-Tac-Toe

Direct-I

1. Array Pair Sum Divisibility Problem2. Maximum of all subarrays of size k3. Jumping Number4. Stock Buy and Sell5. Search in a Matrix6. Excel Sheet Title 7. Transform String to Another8. Shortest path from 1 to n

Flipkart

1. Print Bracket Number2. Kth Element of two Sorted Array3. First non-repeating character in a stream4. Snake and Ladder Problem5. Chocolate Distribution Problem6. 0-1 Knapsack Problem7. Key Pair8. Maximum of all subarrays of size k9. N meetings in one room10. Gold Mine Problem11. Doubling the Value12. Sum of Dependencies in Graph

Morgan Stanley

1. Minimum Distinct Ids2. Largest Even Number Using Max One Swap

Goldman Sachs

1. Second Most Repeated String2. Numbers containing 1, 2 and 3 Only3. Repeated Character present first in string4. Wave Array5. Total Decoding Messages

Walmart Labs

1. Longest Consecutive Subsequence2. Find the highest occurring digit in prime numbers in a range3. Count all possible paths from top left to bottom right4. Two Prime Numbers Sum Equal to X