Section 1.5,Prime Palindromes
2011-05-01 21:34
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1题目描述
http://ace.delos.com/usacoprob2?a=lnS75jP5keh&S=pprime
2
1)个位数为奇数
2)所有偶数位的回文数都能被11整除 [1]
3)判断是否质数是只需试除到
sqrt(i) [2]
4)我的程序用的是递归函数生成数据
参考资料
[1]
http://greenmoon55.com/usaco-prime-palindromes/
[2]
http://blog.sina.com.cn/s/blog_5ed6a69f0100dym7.html
http://ace.delos.com/usacoprob2?a=lnS75jP5keh&S=pprime
2
1)个位数为奇数
2)所有偶数位的回文数都能被11整除 [1]
3)判断是否质数是只需试除到
sqrt(i) [2]
4)我的程序用的是递归函数生成数据
参考资料
[1]
http://greenmoon55.com/usaco-prime-palindromes/
[2]
http://blog.sina.com.cn/s/blog_5ed6a69f0100dym7.html
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