As a point of comparison, consider an idiomatic approach in the vector-oriented language K. Given a vector t: t:199 200 208 210 200 207 240 269 260 263 Th

As a point of comparison, consider an idiomatic approach in the vector-oriented language K. Given a vector t: t:199 200 208 210 200 207 240 269 260 263 The "eachprior" adverb ': captures the pattern of applying each value in a sequence to its predecessor through a verb (in this case >), giving a boolean vector: >':t 0 1 1 1 0 1 1 1 0 1 Then take a sum reduction: +/>':t 7 Seems like the same decomposition would be quite easy with beginner-level Excel, provided an extra "working" column.