Data commit

Task/Largest-int-from-concatenated-ints/Python/largest-int-from-concatenated-ints-1.py

@@ -0,0 +1,16 @@
+try:
+    cmp     # Python 2 OK or NameError in Python 3
+    def maxnum(x):
+        return ''.join(sorted((str(n) for n in x),
+                              cmp=lambda x,y:cmp(y+x, x+y)))
+except NameError:
+    # Python 3
+    from functools import cmp_to_key
+    def cmp(x, y):
+        return -1 if x<y else ( 0 if x==y else 1)
+    def maxnum(x):
+        return ''.join(sorted((str(n) for n in x),
+                              key=cmp_to_key(lambda x,y:cmp(y+x, x+y))))
+
+for numbers in [(1, 34, 3, 98, 9, 76, 45, 4), (54, 546, 548, 60)]:
+    print('Numbers: %r\n  Largest integer: %15s' % (numbers, maxnum(numbers)))

Task/Largest-int-from-concatenated-ints/Python/largest-int-from-concatenated-ints-2.py

@@ -0,0 +1,7 @@
+def maxnum(x):
+    maxlen = len(str(max(x)))
+    return ''.join(sorted((str(v) for v in x), reverse=True,
+                          key=lambda i: i*(maxlen * 2 // len(i))))
+
+for numbers in [(212, 21221), (1, 34, 3, 98, 9, 76, 45, 4), (54, 546, 548, 60)]:
+    print('Numbers: %r\n  Largest integer: %15s' % (numbers, maxnum(numbers)))

Task/Largest-int-from-concatenated-ints/Python/largest-int-from-concatenated-ints-3.py

@@ -0,0 +1,9 @@
+from fractions import Fraction
+from math import log10
+
+def maxnum(x):
+    return ''.join(str(n) for n in sorted(x, reverse=True,
+                          key=lambda i: Fraction(i, 10**(int(log10(i))+1)-1)))
+
+for numbers in [(1, 34, 3, 98, 9, 76, 45, 4), (54, 546, 548, 60)]:
+    print('Numbers: %r\n  Largest integer: %15s' % (numbers, maxnum(numbers)))

Task/Largest-int-from-concatenated-ints/Python/largest-int-from-concatenated-ints-4.py

@@ -0,0 +1,6 @@
+from itertools import permutations
+def maxnum(x):
+    return max(int(''.join(n) for n in permutations(str(i) for i in x)))
+
+for numbers in [(1, 34, 3, 98, 9, 76, 45, 4), (54, 546, 548, 60)]:
+    print('Numbers: %r\n  Largest integer: %15s' % (numbers, maxnum(numbers)))