factor: trim using lists

[factor.git] / basis / math / combinatorics / combinatorics-docs.factor

diff --git a/basis/math/combinatorics/combinatorics-docs.factor b/basis/math/combinatorics/combinatorics-docs.factor
index 776ab37916f7323edb975cdbe470ca23449595eb..784f67c94a7c0d002fb50bbdf7c4e2df0602dff9 100644 (file)
--- a/basis/math/combinatorics/combinatorics-docs.factor
+++ b/basis/math/combinatorics/combinatorics-docs.factor
@@ -1,4 +1,5 @@
-USING: help.markup help.syntax kernel math math.order sequences ;
+USING: help.markup help.syntax math math.combinatorics
+math.combinatorics.private math.order sequences ;
 IN: math.combinatorics
 
 HELP: factorial
@@ -73,7 +74,7 @@ HELP: combination
 { $notes "Combinations are 0-based and a bounds error will be thrown if " { $snippet "m" } " is larger than " { $snippet "seq length k nCk" } "." }
 { $examples
     { $example "USING: math.combinatorics sequences prettyprint ;"
-        "6 7 iota 4 combination ." "{ 0 1 3 6 }" }
+        "6 7 <iota> 4 combination ." "{ 0 1 3 6 }" }
     { $example "USING: math.combinatorics prettyprint ;"
         "0 { \"a\" \"b\" \"c\" \"d\" } 2 combination ." "{ \"a\" \"b\" }" }
 } ;
@@ -88,26 +89,23 @@ HELP: all-combinations
 { $examples
     { $example "USING: math.combinatorics prettyprint ;"
         "{ \"a\" \"b\" \"c\" \"d\" } 2 all-combinations ."
-"""{
-    { "a" "b" }
-    { "a" "c" }
-    { "a" "d" }
-    { "b" "c" }
-    { "b" "d" }
-    { "c" "d" }
-}""" } } ;
+"{
+    { \"a\" \"b\" }
+    { \"a\" \"c\" }
+    { \"a\" \"d\" }
+    { \"b\" \"c\" }
+    { \"b\" \"d\" }
+    { \"c\" \"d\" }
+}" } } ;
 
 HELP: each-combination
 { $values { "seq" sequence } { "k" "a non-negative integer" } { "quot" { $quotation ( ... elt -- ... ) } } }
 { $description "Applies the quotation to each combination of " { $snippet "seq" } " choosing " { $snippet "k" } " elements, in order." } ;
 
-
-IN: math.combinatorics.private
-
 HELP: factoradic
 { $values { "n" integer } { "factoradic" sequence } }
-{ $description "Converts a positive integer " { $snippet "n" } " to factoradic form.  The factoradic of an integer is its representation based on a mixed radix numerical system that corresponds to the values of " { $snippet "n" } " factorial." }
-{ $examples { $example "USING: math.combinatorics.private  prettyprint ;" "859 factoradic ." "{ 1 1 0 3 0 1 0 }" } } ;
+{ $description "Converts a positive integer " { $snippet "n" } " to factoradic form. The factoradic of an integer is its representation based on a mixed radix numerical system that corresponds to the values of " { $snippet "n" } " factorial." }
+{ $examples { $example "USING: math.combinatorics.private prettyprint ;" "859 factoradic ." "{ 1 1 0 3 0 1 0 }" } } ;
 
 HELP: >permutation
 { $values { "factoradic" sequence } { "permutation" sequence } }
@@ -121,6 +119,19 @@ HELP: next-permutation
 { $notes "Performs an in-place modification of " { $snippet "seq" } "." }
 { $examples { $example "USING: math.combinatorics prettyprint ;" "\"ABC\" next-permutation ." "\"ACB\"" } } ;
 
+HELP: all-unique-permutations
+{ $values { "seq" sequence } { "seq'" sequence } }
+{ $description "Outputs a sequence containing all " { $strong "unique" } " permutations of " { $snippet "seq" } " in lexicographical order." }
+{ $examples
+    { $example "USING: math.combinatorics prettyprint ;"
+        "{ 1 1 2 } all-unique-permutations ."
+        "{ { 1 1 2 } { 1 2 1 } { 2 1 1 } }" }
+} ;
+
+HELP: each-unique-permutation
+{ $values { "seq" sequence } { "quot" { $quotation ( ... elt -- ... ) } } }
+{ $description "Applies the quotation to each " { $strong "unique" } " permutation of " { $snippet "seq" } " in order." } ;
+
 HELP: all-subsets
 { $values { "seq" sequence } { "subsets" sequence } }
 { $description
@@ -134,8 +145,8 @@ HELP: all-subsets
     }
 } ;
 
-HELP: selections
-{ $values { "seq" sequence } { "n" integer } { "selections" sequence } }
+HELP: all-selections
+{ $values { "seq" sequence } { "n" integer } { "seq'" sequence } }
 { $description
     "Returns all the ways to take n (possibly the same) items from the "
     "sequence of items."
@@ -143,7 +154,7 @@ HELP: selections
 { $examples
     { $example
         "USING: math.combinatorics prettyprint ;"
-        "{ 1 2 } 2 selections ."
+        "{ 1 2 } 2 all-selections ."
         "{ { 1 1 } { 1 2 } { 2 1 } { 2 2 } }"
     }
 } ;