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顶一下!In Reply To:请教大牛们,我的代码问题出在哪里,谢谢啊! Posted by:oeym at 2006-03-24 11:03:12 > #include <stdio.h> > #include <string.h> > int C[28][12]; > char s[12]; > > int pre() > { > int i, j; > for (i = 0; i < 28; i++) > { > C[i][0] = 1; > } > for (i = 0; i < 12; i++) > { > C[i][i] = 1; > } > for (i = 1; i < 28; i++) > { > for (j = 1; j < 12 && j <= i; j++) > { > C[i][j] = C[i - 1][j - 1] + C[i - 1][j]; > } > } > } > > int check() > { > int i, l, ans, j; > l = strlen(s); > for (i = 0; i < l - 1; i++) > { > if (s[i] >= s[i + 1]) > { > return 0; > } > } > ans = 0; > for (i = 0; i < l; i++) > { > ans += C[26][i]; > } > for (i = 0; i < s[0] - 'a'; i++) > { > ans += C[25 - i][l - 1]; > } > for (i = 1; i < l; i++) > { > for (j = s[i - 1] - 'a'; j < s[i] - 'a' - 1; j++) > { > ans += C[25 - j][l - i - 1]; > } > } > return ans; > } > > int main() > { > int i; > pre(); > while (scanf("%s", s) != -1) > { > printf("%d\n", check()); > } > return 0; > } Followed by:
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