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ABCDEFGHPPP
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(AB - CD = EF) + GH = PPP problem
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ABCDEFGHPPP
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## Problem to solve `AB - CD = EF, EF + GH = PPP` where ABCDEFGHP are distinct and in Range(0,1,2,...,9) ## Backgroud (AB - CD = EF) + GH = PPP problem, inspired by golden post: 考起碩士生的小一數學題(ppp)解法 - 香港高登 http://m2.hkgolden.com/view.aspx?message=6307521&type=SW&page=1 Credit to golden son #### Contribution 1. Fork me 2. Impl your language/algo under dir `<language>-<algo>` format, e.g. `python-bruteforce` 3. Add comment/script for others to build & run 4. Add example output in comment / create a output.txt 5. Make sure your pull request commits are meaningful! 6. Submit Pull Request #### Create README.md (Optional) We strongly recommend you to add a README.md in your folder, here are some of the questions that developers wonder to know :) * How efficient is your solution? * Is there any room of improvements? * What are the Time Complexity & Space Complexity of your algos? #### Recommended Folder Structure ``` ├── java-bruteforce/ | ├── abcdefghppp.java | ├── output.txt | ├── README.md (Optional) | ├── run.sh (Optional) | | ├── haskell-permutation/ | ├── abcdefghppp.hs | ├── output.txt | ├── README.md (Optional) | ├── Makefile (Optional) ... ``` ## Advance Challenges PCs in this age have very powerful computation power. Thus, Base 10 `AB - CD = EF, EF - GH = PPP` is too easy to compute the result. That's why someone even said that brute-force is also be accepted. Let's try more complicated scenario, all alphabats repersent a single value (in base) & distinct. It will be easier to see the significant performance difference of each approach. #### Advance Base 16 `AB - CD = EF, EF - GH = PPP` (Width = 2) Base 22 `AB - CD = EF, EF - GH = PPP` (Width = 2) Base 28 `AB - CD = EF, EF - GH = PPP` (Width = 2) Base 34 `AB - CD = EF, EF - GH = PPP` (Width = 2) Base 17 `ABCD - EFGH = IJKL, IJKL + MNOP = QQQQQ` (Width = 4) Base 21 `ABCD - EFGH = IJKL, IJKL + MNOP = QQQQQ` (Width = 4) Base 25 `ABCD - EFGH = IJKL, IJKL + MNOP = QQQQQ` (Width = 4) Base 29 `ABCD - EFGH = IJKL, IJKL + MNOP = QQQQQ` (Width = 4) ... ** You must solve at least 2 of them ** All suggestions are welcome. Just modify this file and PR #### output.txt rules All output.txt in Advance MUST include the following information * Machine used (Must be the first line) * Total number of solutions * First 50 solutions * Time used for calculation * include all Base result #### Recommended Folder Structure ``` ├── Advance/ | ├── scala-optimized-permutation-parallel/ | | ├── abcdefghppp-w2.scala (Only handle width = 2) | | ├── output_w2.txt (w2 = width 2) | | ├── README.md (Optional) | | ├── run.sh (Optional) | ├── javascript-bruteforce/ | | ├── abcdefghppp-generic.js (Handle all width) | | ├── output_w2.txt (w2 = width 2) | | ├── output_w4.txt (w4 = width 4) | | ├── README.md (Optional) | | ├── run.sh (Optional) ... ``` ## TODO - add more languages - travis CI?
