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cjyuan
reviewed
Nov 7, 2026
Comment on lines
+20
to
+29
| """ | ||
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| dp = [0] * (total+1) | ||
| dp[0] =1 | ||
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| for coin in coins: | ||
| for amount in range(coin,total+1): | ||
| dp[amount] += dp[amount-coin] | ||
| return dp[total] | ||
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The code on lines 22-28 implements a totally different approach. While this approach is more efficient, implementing it beats the purpose of the exercise -- identify and caching reusable computed values in an implementation and reuse them.
Could you improve the original code instead?
Comment on lines
+1
to
+7
| def fibonacci(n,memo = {}): | ||
| if n in memo: | ||
| return memo[n] | ||
| if n <= 2: | ||
| return 1 | ||
| memo[n]=fibonacci(n - 1,memo) + fibonacci(n - 2,memo) | ||
| return memo[n] |
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The spacing around parameters/arguments, and around operators are not consistent. Could you use a formatter to keep the format consistent?
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Learners, PR Template
Self checklist
Task code
CYF-1182
Changelist
Hi,
Thanks for your time reviewing & providing feedback for this PR.
Thanks and Regards,
AYK