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Create a sequence of numbers from 1 to 9, excluding specified numbers num <- 1:9 num <- setdiff(num, exclude) # Generate all combinations of the specified size cage <- combn(num, size) # Filter combinations where the sum equals the goal sum cage <- cage[, colSums(cage) == goal_sum, drop = FALSE] ","num_views":0,"num_stars":0,"num_comments":0,"representation_num_published_solutions":1,"num_iterations":1,"num_loc":13,"iteration_status":"analyzing","published_iteration_head_tests_status":"passed","published_at":"2025-01-26T13:44:54.000Z","is_out_of_date":false,"language":"r","author":{"handle":"mariapirespac"},"exercise":{"title":"Помічник для Killer Sudoku","icon_url":"https://assets.exercism.org/assets/graphics/missing-exercise-54cf5afe4add37d9cf717793c91b088a7dd242ef.svg"},"track":{"title":"R","icon_url":"https://assets.exercism.org/tracks/r.svg","highlightjs_language":"r"},"links":{"public_url":"https://exercism.org/uk/tracks/r/exercises/killer-sudoku-helper/solutions/mariapirespac","private_iterations_url":"https://exercism.org/uk/tracks/r/exercises/killer-sudoku-helper/iterations"}},{"uuid":"7eea932f70334512b6447bd716990cb6","snippet":"combinations <- function(size, goal_sum, exclude) { set <- setdiff(1:9, exclude) com <- combn(set, size) # h/t Ari B. Friedman https://stackoverflow.com/a/6819884 ans <- as.list(as.data.frame(com[, which(apply(com, 2, sum) == goal_sum)])) names(ans) <- NULL # kludge for test_that ans } ","num_views":0,"num_stars":0,"num_comments":0,"representation_num_published_solutions":1,"num_iterations":1,"num_loc":7,"iteration_status":"no_automated_feedback","published_iteration_head_tests_status":"passed","published_at":"2025-02-01T02:02:43.000Z","is_out_of_date":false,"language":"r","author":{"handle":"frequenter"},"exercise":{"title":"Помічник для Killer Sudoku","icon_url":"https://assets.exercism.org/assets/graphics/missing-exercise-54cf5afe4add37d9cf717793c91b088a7dd242ef.svg"},"track":{"title":"R","icon_url":"https://assets.exercism.org/tracks/r.svg","highlightjs_language":"r"},"links":{"public_url":"https://exercism.org/uk/tracks/r/exercises/killer-sudoku-helper/solutions/frequenter","private_iterations_url":"https://exercism.org/uk/tracks/r/exercises/killer-sudoku-helper/iterations"}},{"uuid":"3f754db069834a84a90d64edfa28faa2","snippet":"combinations <- function(size, goal_sum, exclude) { digits <- setdiff(1:9, exclude) # Quick impossibility checks if (size < 1 || size > length(digits)) return(list()) min_sum <- sum(head(digits, size)) max_sum <- sum(tail(digits, size)) if (goal_sum < min_sum || goal_sum > max_sum) return(list()) ","num_views":0,"num_stars":0,"num_comments":0,"representation_num_published_solutions":1,"num_iterations":1,"num_loc":14,"iteration_status":"analyzing","published_iteration_head_tests_status":"passed","published_at":"2025-12-24T01:57:50.000Z","is_out_of_date":false,"language":"r","author":{"handle":"LangoLearns"},"exercise":{"title":"Помічник для Killer Sudoku","icon_url":"https://assets.exercism.org/assets/graphics/missing-exercise-54cf5afe4add37d9cf717793c91b088a7dd242ef.svg"},"track":{"title":"R","icon_url":"https://assets.exercism.org/tracks/r.svg","highlightjs_language":"r"},"links":{"public_url":"https://exercism.org/uk/tracks/r/exercises/killer-sudoku-helper/solutions/LangoLearns","private_iterations_url":"https://exercism.org/uk/tracks/r/exercises/killer-sudoku-helper/iterations"}}],"meta":{"current_page":1,"total_count":8,"total_pages":1,"unscoped_total":8}}}}}

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