diff options
Diffstat (limited to 'pass_the_pillow.c')
-rw-r--r-- | pass_the_pillow.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/pass_the_pillow.c b/pass_the_pillow.c new file mode 100644 index 0000000..2ffe2d3 --- /dev/null +++ b/pass_the_pillow.c @@ -0,0 +1,23 @@ +// 2582. Pass the Pillow +#include "leetcode.h" + +/* + * there are 'n' people standing in a line labeled from 1 to 'n'. the first + * person in the line is holding a pillow initially. every second, the person + * holding the pillow passe it to the next person standing in the line. once the + * pillow reaching the end of the line, the direction changes and people + * continue passing the pillow in the opposite direction. given the two positive + * integers 'n' and 'time', return the index of the peson holding the pillow + * after 'time' seconds. + */ + +int passThePillow(int n, int time) { + int rounds = time / (n - 1), ans = 0; + ans = !(rounds % 2) ? 1 + time % (n - 1) : n - time % (n - 1); + return ans; +} + +int main() { + printf("%d\n", passThePillow(4, 5)); // expect: 2 + printf("%d\n", passThePillow(3, 2)); // expect: 3 +} |