Non-decimal radices/Convert: Difference between revisions

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 =={{header|Python}}==
-Converting from string to number is easy:
+===Python: string to number===
+Converting from string to number is straight forward:
 <lang python>i = int('1a',16)  # returns the integer 26</lang>
+===Python: number to string===
 Converting from number to string is harder:
+;Recursive:
 <lang python>digits = "0123456789abcdefghijklmnopqrstuvwxyz"
 def baseN(num,b):
    return (((num == 0) and  "0" )
            or ( baseN(num // b, b).lstrip("0")
-                + digits[num % b]))
+                + digits[num % b]))</lang>
+;Iterative:
-# alternatively:
-def baseN(num,b):
+<lang>digits = [[ch] for ch in "0123456789abcdefghijklmnopqrstuvwxyz"]
-  if num == 0: return "0"
-  result = ""
-  while num != 0:
+def baseN(num, b):
-    num, d = divmod(num, b)
+    if num == 0:
-    result += digits[d]
+        return "0"
-  return result[::-1] # reverse
+    result = []
+    while num != 0:
+        num, d = divmod(num, b)
+        result += digits[d]
+    return ''.join(result[::-1])</lang>
+;Sample run from either:
+<pre>In [1: baseN(26, 16)
-k = 26
+Out[1]: '1a'</pre>
-s = baseN(k,16) # returns the string 1a</lang>
 =={{header|R}}==