LabbtillfälleHEADmaster

1 files changed, 38 insertions, 0 deletions

diff --git a/upg3_2.py b/upg3_2.py
new file mode 100644
index 0000000..b216c1e
--- /dev/null
+++ b/upg3_2.py
@@ -0,0 +1,38 @@
+from functools import reduce
+
+def sum_of_ints(values):
+    return reduce(lambda x,y: x + y if type(y) == int else x, values, 0)
+
+def flatten_list1(vals):
+    res = []
+    for val in vals:
+        if type(val) == list:
+            res.extend(flatten_list1(val))
+        else:
+            res.append(val)
+    return res
+
+def flatten_list2(vals):
+    return flatten_list1(vals)
+
+def get_first_column(matrix):
+    return [row[0] for row in matrix]
+
+def get_nth_column(n, matrix):
+    return [row[n-1] for row in matrix]
+
+def get_all_columns(matrix):
+    return [get_nth_column(i+1, matrix) for i in range(len(matrix[0]))]
+
+def scalar_product(vec1, vec2):
+    return sum(map(lambda pair: pair[0] * pair[1], zip(vec1, vec2)))
+
+def matrix_square(matrix):
+    new_matrix = []
+    for row in matrix:
+        new_row = []
+        for i in range(len(row)):
+            new_row.append(scalar_product(row, get_nth_column(i+1, matrix)))
+        new_matrix.append(new_row)
+    return new_matrix
+