diff options
Diffstat (limited to 'sonstiges/josephus2.cpp')
| -rw-r--r-- | sonstiges/josephus2.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sonstiges/josephus2.cpp b/sonstiges/josephus2.cpp new file mode 100644 index 0000000..7676e3c --- /dev/null +++ b/sonstiges/josephus2.cpp @@ -0,0 +1,8 @@ +int rotateLeft(int n) { //returns the number of the last survivor (1 based) + for (int i = 31; i >= 0; i--) + if (n & (1 << i)) { + n &= ~(1 << i); + break; + } + n <<= 1; n++; return n; +}
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