コミット: 3e43d3f153fea219b8401accdcf5277d39eacf2e - GaloisField (hg)

A small kernel of code for playing with Galois fields of arbitrary characteristic

コミットメタ情報

• リビジョン: 3e43d3f153fea219b8401accdcf5277d39eacf2e (tree)
• 日時: 2020-02-16 18:06:20
• 作者: Eric Hopper <hopper@omni...>
• コミッター: Eric Hopper

ログメッセージ

Add a function to print out a group table for presentation.

変更サマリ

• modified: numtheory_utils.py

差分

diff -r 0b77fa2db6fa -r 3e43d3f153fe numtheory_utils.py
--- a/numtheory_utils.py	Sun Jan 12 14:45:56 2020 -0800
+++ b/numtheory_utils.py	Sun Feb 16 01:06:20 2020 -0800
@@ -40,3 +40,17 @@
 # (1 * 16 - 0 * 23) - 2 * (1 * 23 - 1 * 16) = 3 * 16 - 2 * 23 = 2
 # (1 * 23 - 1 * 16) - 3 * (3 * 16 - 2 * 23) = 7 * 23 - 10 * 16 = 1
 # 13 * 16 - 9 * 23 = 1
+
+
+def print_group_table(elements, op):
+    width = max(len(str(x)) for x in elements)
+    print(f'{" ":{width}} |', end='')
+    for a in elements:
+        print(f' {a:{width}} |', end='')
+    print()
+    for a in elements:
+        print(f'{a:{width}} |', end='')
+        for b in elements:
+            result = op(a, b)
+            print(f' {result:{width}} |', end='')
+        print()