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Ripple shuffle a vector in R so the order is: [first, last, second, second to last ...]
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| ripple_shuffle <- function(object) { | |
| purrr::map( | |
| seq(1, length(object) / 2), | |
| ~ c( | |
| purrr::chuck(object, .x), | |
| purrr::chuck(object, length(object) - .x + 1) | |
| ) | |
| ) %>% | |
| unlist() | |
| } |
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| ripple_shuffle <- function(object) { | |
| purrr::map( | |
| seq(object), | |
| ~ c( | |
| purrr::chuck(object, .x), | |
| purrr::chuck(object, length(object) - .x + 1) | |
| ) | |
| ) %>% | |
| purrr::map(sort) %>% | |
| unique() %>% | |
| unlist() %>% | |
| unique() | |
| } |
Added a much less elegant version that does guarantee all elements are at least present
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This results in sometimes dropping an element!