文件名称:BlackHole
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- JSP源码/Java
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- [Text]
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- 2014-05-19
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- 2kb
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- t**
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数学黑洞6174
已知:一个任意的四位正整数。将数字重新组合成一个最大的数和最小的数相减,重复这个过程,最多七步必得6174。即:7641-1467=6174。将永远出不来。
求证:所有四位数数字(全相同的除外),均能得到6174。输出掉进黑洞的步数-6174 known mathematical black hole: an arbitrary four positive integer. The re-assembled into a digital number and the maximum number of minimum subtraction process is repeated up to seven steps must 6174. That :7641-1467 = 6174. Will never get out. Prove: All four-digit number (except identical), and can get 6174. Output fell into the black hole of the number of steps
已知:一个任意的四位正整数。将数字重新组合成一个最大的数和最小的数相减,重复这个过程,最多七步必得6174。即:7641-1467=6174。将永远出不来。
求证:所有四位数数字(全相同的除外),均能得到6174。输出掉进黑洞的步数-6174 known mathematical black hole: an arbitrary four positive integer. The re-assembled into a digital number and the maximum number of minimum subtraction process is repeated up to seven steps must 6174. That :7641-1467 = 6174. Will never get out. Prove: All four-digit number (except identical), and can get 6174. Output fell into the black hole of the number of steps
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