tasks a-s

Task/Pangram-checker/MATLAB/pangram-checker-1.m

@@ -0,0 +1,12 @@
+function trueFalse = isPangram(string)
+
+    %This works by histogramming the ascii character codes for lower case
+    %letters contained in the string (which is first converted to all
+    %lower case letters). Then it finds the index of the first letter that
+    %is not contained in the string (this is faster than using the find
+    %without the second parameter). If the find returns an empty array then
+    %the original string is a pangram, if not then it isn't.
+
+    trueFalse = isempty(find( histc(lower(string),(97:122))==0,1 ));
+
+end

Task/Pangram-checker/MATLAB/pangram-checker-2.m

@@ -0,0 +1,5 @@
+isPangram('The quick brown fox jumps over the lazy dog.')
+
+ans =
+
+     1

Task/Pangram-checker/MATLAB/pangram-checker.m

@@ -0,0 +1,5 @@
+function trueFalse = isPangram(string)
+    % X is a histogram of letters
+    X = sparse(abs(lower(string)),1,1,128,1);
+    trueFalse = full(all(X('a':'z') > 0));
+end