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Avoid repeated element lookup in sequence.

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Maximilian Albert
2017-12-17 19:45:41 +00:00
parent 7dbee85fdd
commit c6d50228ec
1 changed files with 4 additions and 2 deletions
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6
ipynb/Advent 2017.ipynb
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@@ -857,8 +857,9 @@
"source": [ "source": [
"def run(program):\n", "def run(program):\n",
" memory = list(program)\n", " memory = list(program)\n",
" mlen = len(memory)\n",
" pc = steps = 0\n", " pc = steps = 0\n",
" while pc in range(len(memory)):\n", " while 0 <= pc < mlen:\n",
" steps += 1\n", " steps += 1\n",
" oldpc = pc\n", " oldpc = pc\n",
" pc += memory[pc]\n", " pc += memory[pc]\n",
@@ -912,8 +913,9 @@
"source": [ "source": [
"def run2(program, verbose=False):\n", "def run2(program, verbose=False):\n",
" memory = list(program)\n", " memory = list(program)\n",
" mlen = len(memory)\n",
" pc = steps = 0\n", " pc = steps = 0\n",
" while pc in range(len(memory)):\n", " while 0 <= pc < mlen:\n",
" steps += 1\n", " steps += 1\n",
" oldpc = pc\n", " oldpc = pc\n",
" pc += memory[pc]\n", " pc += memory[pc]\n",