A-M baby

Task/Longest-string-challenge/Python/longest-string-challenge.py

@@ -0,0 +1,16 @@
+import fileinput
+
+# return len(a) - len(b) if positive, 0 otherwise
+def longer(a, b):
+    while len(a) and len(b):
+        a, b = a[1:], b[1:]
+    return len(a)
+
+longest, lines = '', ''
+for x in fileinput.input():
+    if longer(x, longest):
+        lines, longest = x, x
+    elif not longer(longest, x):
+        lines += x
+
+print(lines, end='')