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module4_looping.m

+%% module 4, looping
+
+%% example -- can't change iterator during for loop
+
+for i = 1:9
+    disp(['i is ',num2str(i),', trying to change it to ',num2str(3*i)])
+    i = 3*i; % don't do this (trying to change an iterator in a for loop)
+end
+    
+
+%% example -- find largest number divisible with 7 and smaller than 100    
+
+i = 1;
+while i*7<100
+    i = i+1;
+end
+disp(7*i) % this will be larger than 100 -- so condition from while does not hold
+
+%% example -- vectorization
+
+test = [3, 4, 8, 6, 5, 8, 3, 4, 7, 8, 8, 9, 4, 1, 3, 4, 6, 7, 9, 5, 3, 5, 7, 2, 5, 3];
+
+hist = zeros(1,9);
+for i = 1:numel(test)
+    hist(test(i)) = hist(test(i))+1;
+end
+
+