流水號變換算法(9位)

原創 AshenOne余烬 2020-02-26 04:07
int num = (((seq^12345678) & 0x7F)<<22) | ((seq^12345678) & 0x1FFFFFFF)>>>7;

流水號變換算法，供參考


只用了29位(bit)，一個卡bin能發5億多。9位流水號理論上能發10億，由於有位運算，只用29位，30位就超過10億了

發表評論
所有評論
還沒有人評論，想成為第一個評論的人麼? 請在上方評論欄輸入並且點擊發布.
相關文章

智慧家庭場景的推薦系統的發展歷程和方向 | InfoQ《公開課》

直播概要： 隨着計算機的蓬勃發展，互聯網進入大數據和人工智能時代，爲了解決信息過載和長尾商品，推薦系統成爲唯一選擇，而面對不同的業務場景，爲了解決業務痛點，會根據不同的場景特點尋找不同的方法和手段來解決推薦中實際遇到的問題。在智慧家庭領域，

InfoQ 中文站 2021-12-21 10:54:01

Alexa 全球排名網站將關閉，排名曾引爭議

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"typ

辛晓亮 2021-12-14 14:53:55

Thinking Above Code：TLA+思維概述

{"type":"doc","content":[{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null

李明昊 2021-12-07 17:23:58

你的2.6朵雲裏，會有火山引擎嗎？

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"typ

张俊宝 2021-12-07 10:28:54

數字化轉型這麼火，你真的看懂了嗎？

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"typ

张俊宝 2021-12-02 21:08:57

基於圖像的機器學習技術將數十億的電子商務產品分爲數千個類別

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"typ

Celian Gossec 2021-11-29 16:28:50

如何用 PyTorch 構建 GAN？

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"typ

a-ying Cheng 2021-11-23 11:18:54

繞過硬件瓶頸，成倍提升芯片算力，軟件層面深挖芯片性能可行嗎？

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"typ

张俊宝 2021-11-23 11:18:54

App Annie發佈預測：TikTok 將達 15 億活躍用戶，遙遙領先 Instagram

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"typ

闫园园 2021-11-19 19:53:55

不是隻有數字化水平高，纔可以落地知識圖譜

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"blockq

罗燕珊 2021-11-11 15:23:53

科大訊飛在AI源頭技術上的突破，實現系統性創新

{"type":"doc","content":[{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null

Lucien 2021-11-08 15:13:57

不滿被辭退，一程序員寫爬蟲程序侵入公司後臺刪庫泄憤，造成經濟損失10餘萬元

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"blockq

刘燕 2021-11-08 14:03:51

“Trojan Source”算法漏洞幾乎影響所有代碼的安全

{"type":"doc","content":[{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null

Brian Krebs 2021-11-05 18:33:59

谷歌前CEO發出警告：元宇宙對人類未必是好事，AI技術是“僞神”

{"type":"doc","content":[{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null

凌敏 2021-11-02 14:03:53

騰訊發佈超大預訓練系統派大星，聚焦解決BERT等超大模型訓練時的“GPU內存牆”問題

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"typ

InfoQ编辑部 2021-11-02 13:38:53