Add second year

second/semester2/CT248/Assignments/LabTest-1/clean_grades.m

@@ -0,0 +1,9 @@
+function [grades] = clean_grades(grades) 
+   for i = 1:(size(grades,1)*size(grades,2))
+       if grades(i) < 0 
+           grades(i)  = 0; 
+       elseif grades(i) > 100 
+           grades(i) = 0; 
+       end 
+   end
+end

second/semester2/CT248/Assignments/LabTest-1/create_grades.m

@@ -0,0 +1,4 @@
+function [grades] = create_grades(rows, columns, min, max, seed) 
+    rng(seed);
+    grades = randi([min max], rows, columns);
+end

second/semester2/CT248/Assignments/LabTest-1/fill_estimates.m

@@ -0,0 +1,25 @@
+function [grades] = fill_estimates(grades)
+    for i = 1:size(grades, 2) 
+        % making copy
+        copy = grades(:, i);
+        nonzero = 0; % count of nonzero elements to calculate avg
+        sum = 0;    % sum of nonzero elements
+
+        % looping through copy and counting number of nonzero elements
+        for j = 1:size(copy,1) 
+            if copy(j) ~= 0
+                nonzero = nonzero + 1;
+                sum = sum + copy(j);
+            end 
+        end
+        
+        avg = round(sum / nonzero);
+
+        % looping through original and replacing any nonzero with average 
+        for j = 1:size(copy,1)
+            if grades(j,i) == 0
+                grades(j,i) = avg; 
+            end
+        end
+    end
+end

second/semester2/CT248/Assignments/LabTest-1/test.m

@@ -0,0 +1,4 @@
+clear;
+gr1 = create_grades(10,5,-10,110,100);
+gr2 = clean_grades(gr1);
+gr3 = fill_estimates(gr2);