15 Questions that will cover everything in arrays

Arrays are a simple data structure for storing lots of similar items. They exist in all programming languages and are used as the basis for most other data structures. On their own, Arrays can be used to solve many interesting problems. Arrays come up very often in interview problems, and so being a guru with them is a must!

Questions are:

01. Max Consecutive Ones

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02. Numbers with Even Number of Digits

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03. Squares of a Sorted Array

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04. Duplicate Zeros

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05. Merge Sorted Array

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06. Remove Element

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07. Remove Duplicates from Sorted Array

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08. Check If N and Its Double Exist

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09. Valid Mountain Array

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10. Replace Elements with Greatest Element on Right Side

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11. Move Zeroes

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12. Sort Array By Parity

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13. Height Checker

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14. Third Maximum Number

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15. Find All Numbers Disappeared in an Array

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Explanation and solution of above questions

Question wise Solutions

26:20 Max Consecutive Ones

33:30 Numbers with Even Number of Digits

41:52 Squares of a Sorted Array

53:00 Duplicate Zeros

1:00:44 Merge Sorted Array

1:17:49 Remove Element

1:21:27 Remove Duplicates from Sorted Array

1:29:30 Check If N and Its Double Exist

1:40:06 Valid Mountain Array

1:50:35 Replace Elements with Greatest Element on Right Side

1:58:49 Move Zeroes

2:06:05 Sort Array By Parity

2:16:14 Height Checker

2:25:26 Third Maximum Number

2:40:12 Find All Numbers Disappeared in an Array

15 Questions that will cover everything in arrays