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| author | Gloria Mundi <gloria@gloria-mundi.eu> | 2024-11-16 15:39:23 +0100 |
|---|---|---|
| committer | Gloria Mundi <gloria@gloria-mundi.eu> | 2024-11-16 15:39:23 +0100 |
| commit | 72bd993483453ed8ebc462f1a33385cd355d486f (patch) | |
| tree | c5592ba1ed2fed79e26ba6158d097c9ceb43f061 /content/other/josephus2.cpp | |
| parent | 98567ec798aa8ca2cfbcb85c774dd470f30e30d4 (diff) | |
| parent | 35d485bcf6a9ed0a9542628ce4aa94a3326d0884 (diff) | |
merge mzuenni changes
Diffstat (limited to 'content/other/josephus2.cpp')
| -rw-r--r-- | content/other/josephus2.cpp | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/content/other/josephus2.cpp b/content/other/josephus2.cpp index 5086e13..33544ea 100644 --- a/content/other/josephus2.cpp +++ b/content/other/josephus2.cpp @@ -1,8 +1,5 @@ int rotateLeft(int n) { // Der letzte Überlebende, 1-basiert. - for (int i = 31; i >= 0; i--) { - if (n & (1 << i)) { - n &= ~(1 << i); - break; - }} - n <<= 1; n++; return n; + int bits = __lg(n); + n ^= 1 << bits; + return 2 * n + 1; } |