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15 lines
320 B

seq_in <- function(source_vector, pattern_vector) {
which(
Reduce(
'+',
lapply(
seq_along(y <- lapply(pattern_vector, '==', source_vector)),
function(x) {
y[[x]][x:(length(source_vector) - length(pattern_vector) + x)]
}
)
) == length(pattern_vector)
)
}