Data commit

Task/Find-the-missing-permutation/MATLAB/find-the-missing-permutation-1.m

@@ -0,0 +1,27 @@
+function perm = findMissingPerms(list)
+
+    permsList = perms(list(1,:)); %Generate all permutations of the 4 letters
+    perm = []; %This is the functions return value if the list is not missing a permutation
+
+    %Normally the rest of this would be vectorized, but because this is
+    %done on a vector of strings, the vectorized functions will only access
+    %one character at a time. So, in order for this to work we have to use
+    %loops.
+    for i = (1:size(permsList,1))
+
+        found = false;
+
+        for j = (1:size(list,1))
+            if (permsList(i,:) == list(j,:))
+                found = true;
+                break
+            end
+        end
+
+        if not(found)
+            perm = permsList(i,:);
+            return
+        end
+
+    end %for
+end %fingMissingPerms

Task/Find-the-missing-permutation/MATLAB/find-the-missing-permutation-2.m

@@ -0,0 +1,55 @@
+>> list = ['ABCD';
+'CABD';
+'ACDB';
+'DACB';
+'BCDA';
+'ACBD';
+'ADCB';
+'CDAB';
+'DABC';
+'BCAD';
+'CADB';
+'CDBA';
+'CBAD';
+'ABDC';
+'ADBC';
+'BDCA';
+'DCBA';
+'BACD';
+'BADC';
+'BDAC';
+'CBDA';
+'DBCA';
+'DCAB']
+
+list =
+
+ABCD
+CABD
+ACDB
+DACB
+BCDA
+ACBD
+ADCB
+CDAB
+DABC
+BCAD
+CADB
+CDBA
+CBAD
+ABDC
+ADBC
+BDCA
+DCBA
+BACD
+BADC
+BDAC
+CBDA
+DBCA
+DCAB
+
+>> findMissingPerms(list)
+
+ans =
+
+DBAC