Math#max
ãããMath#maxã£ã¦ãªããã ã£ããã©ã£ãã§è¦ãè¦ãããããã ãã»ã»ã»ã¨æã£ããこれã§ãããæ大ã®æ´æ°ã欲ããå ´åã¯ãこれã使ã£ã¦ãããªæãã§æ¸ãã®ãã¹ãã¼ãããªã
a=3 b=7 c=5 # æ大ã®æ´æ°ãå¾ãã p [a,b,c].max
å®è¡çµæã§ãã
7