message: Update coin-change.py
diff: @@ -9,13 +9,13 @@ class Solution(object):
  :rtype: int
  """
  INF = 0x7fffffff # Using float("inf") would be slower.
  - amounts = [INF] * (amount + 1)
  - amounts[0] = 0
  + dp = [INF] * (amount + 1)
  + dp[0] = 0
  for i in xrange(amount + 1):
  - if amounts[i] != INF:
  + if dp[i] != INF:
  for coin in coins:
  if i + coin <= amount:
  - amounts[i + coin] = min(amounts[i + coin], amounts[i] + 1)
  - return amounts[amount] if amounts[amount] != INF else -1
  + dp[i + coin] = min(dp[i + coin], dp[i] + 1)
  + return dp[amount] if dp[amount] != INF else -1
  