--- title: "#missing-number articles | Hashnode" description: "Explore 6 articles tagged #missing-number on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/missing-number" --- Tag # #missing-number 6 posts · 0 followers [Ardhendu Ghosh](https://hashnode.com/@ardhendughosh) · [Aug 30, 2025](https://hashnode.com/posts/mastering-recursive-ctes-the-missing-number-problem/68b288e4d9f087f50c19092c) ### [Mastering Recursive CTEs: The Missing Number Problem](https://advance-sql.hashnode.dev/mastering-recursive-ctes-the-missing-number-problem?utm_source=hashnode&utm_medium=feed) A step-by-step guide to solving a classic SQL technical interview question and identifying data gaps. 4 min read · [advance-sql.hashnode.dev](https://advance-sql.hashnode.dev/mastering-recursive-ctes-the-missing-number-problem?utm_source=hashnode&utm_medium=feed) [Vedicmeet1](https://hashnode.com/@Vedicmeet1) · [May 30, 2025](https://hashnode.com/posts/missing-number/68398cfa9b57f0233af08554) ### [What is a Missing Number in Numerology? Discover Your Karmic Lessons](https://vedicmeetblogs.hashnode.dev/missing-number?utm_source=hashnode&utm_medium=feed) Missing Number in Numerology 2 min read · [vedicmeetblogs.hashnode.dev](https://vedicmeetblogs.hashnode.dev/missing-number?utm_source=hashnode&utm_medium=feed) [Adiam Ahmed](https://hashnode.com/@AdiamAhmed) · [May 11, 2025](https://hashnode.com/posts/missing-number/68210a981cc8b800af105d6b) ### [Missing Number](https://adiamvsleetcode.hashnode.dev/missing-number?utm_source=hashnode&utm_medium=feed) Solving ‘Missing Number’ the Easy Way (Before It Gets Too LeetCode) 7 min read · [adiamvsleetcode.hashnode.dev](https://adiamvsleetcode.hashnode.dev/missing-number?utm_source=hashnode&utm_medium=feed) [Vineeth Chivukula](https://hashnode.com/@vineethchivukula) · [Jul 6, 2024](https://hashnode.com/posts/solving-missing-number/668938fb26a31d955112903a) ### [Solving Missing Number](https://vineethchivukula.hashnode.dev/solving-missing-number?utm_source=hashnode&utm_medium=feed) To see the question, click here. Naive Approach The idea is to sort the array and then compare the index with the number present at that index. // TC: O(nlogn) // SC: O(1) import java.util.Arrays; class MissingNumber { public int missingNumber(... 4 min read · [vineethchivukula.hashnode.dev](https://vineethchivukula.hashnode.dev/solving-missing-number?utm_source=hashnode&utm_medium=feed) [Mahbub Alam Masum](https://hashnode.com/@masum-dev) · [Jun 21, 2024](https://hashnode.com/posts/how-to-find-the-missing-number-in-an-array/6675a38a0631e3bbaf526aac) ### [How to Find the Missing Number in an Array](https://blog.masum.dev/how-to-find-the-missing-number-in-an-array?utm_source=hashnode&utm_medium=feed) Find the missing number in an array with numbers from 1 to N using 4 methods: brute force, hashing, summation and XOR, with details and complexity analysis 7 min read · [blog.masum.dev](https://blog.masum.dev/how-to-find-the-missing-number-in-an-array?utm_source=hashnode&utm_medium=feed) [Chetan Datta](https://hashnode.com/@chetan77) · [Dec 6, 2023](https://hashnode.com/posts/268-485-136/65706c1499e722660d6e7baa) ### [Arrays Easy - Part III (XOR)](https://chetan77.hashnode.dev/268-485-136?utm_source=hashnode&utm_medium=feed) 268\. Missing Number Problem Statement Given an array nums containing n distinct numbers in the range \[0, n\], return the only number in the range that is missing from the array. (link) Example 1: Input: nums = \[3,0,1\] Output: 2 Explanation: n = 3 sinc... 3 min read · [chetan77.hashnode.dev](https://chetan77.hashnode.dev/268-485-136?utm_source=hashnode&utm_medium=feed)