And now I'm done with the first half of day 3, though the second half will take a bit more time.

2021/3/main.py

@@ -0,0 +1,48 @@
+bits = []
+
+gamma = 0
+epsilon = 0
+
+gamma_str = ''
+epsilon_str = ''
+
+with open('data', 'r') as fp:
+
+    # NOTE(dev): We assume all lines are the same length
+    for i in range(0, len(fp.readline().strip())):
+        bits.append(0)
+
+    # # DEBUG(dev):
+    # test = fp.readline()
+    # for i in range(0, len(test)):
+    #     print test[i]
+
+    for line in fp:
+        for i in range(0, len(line.strip())):
+            if(line[i] == '1'):
+                bits[i] = bits[i] + 1
+            else:
+                bits[i] = bits[i] - 1
+
+for i in range(0, len(bits)):
+    ch = '1'
+    if(bits[i] < 0):
+        ch = '0'
+    gamma_str = gamma_str + ch
+
+# # DEBUG(dev):
+# for i in range(1, len(gamma_str)+1):
+#     print gamma_str[-i]
+
+# NOTE(dev): Have to do (i+1) because we're going backwards, which starts at -1
+for i in range(0, len(gamma_str)):
+    if(gamma_str[-(i+1)] == '1'):
+    	gamma = gamma + pow(2,i)
+    else:
+    	epsilon = epsilon + pow(2,i)
+
+
+# print "   bits: ", bits
+print "  gamma: ", gamma
+print "epsilon: ", epsilon
+print "  POWER: ", gamma * epsilon