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# Overview
All about [Between Two Sets](https://www.hackerrank.com/challenges/between-two-sets/problem?h_r=next-challenge&h_v=zen)
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## Description
HackerRank recently introduced a module called [**Cracking the Coding Interview**](https://www.hackerrank.com/domains/tutorials/cracking-the-coding-interview/status/all/page/1). For th…
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https://www.hackerrank.com/challenges/find-digits/problem?isFullScreen=true
Please assign this issue to me. as i have the solution for this problem with Hectoberfest label.
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https://www.hackerrank.com/challenges/picking-numbers/problem?isFullScreen=true
Please assign this issue to me, as i have the solution for this problem, with Hectoberfest label.
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### Aim
I would like to add the solution for Magic Spells[Hard level] from Hackerrank.
### Details
Link to the problem: https://www.hackerrank.com/challenges/magic-spells/problem
I would l…
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1. 判斷字串是否為Rotate，這題有很有趣的解法
https://leetcode.com/problems/rotate-string/
2. 快樂數，這題我覺得要注意的點在於會進入無限循環
https://leetcode.com/problems/happy-number/
3. Two-sum，這題就是map + 減法結案那題
https://leetcode.com…
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출처 : https://www.hackerrank.com/challenges/ginorts/problem
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https://www.hackerrank.com/challenges/construct-the-array/problem
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Problem : https://www.hackerrank.com/challenges/text-wrap/problem