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Yudong Jin
d7b2277d2b
* Retranslate Japanese docs with GPT-5.4 * Retranslate Japanese code with GPT-5.4
28 lines
537 B
Dart
28 lines
537 B
Dart
/**
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* File: climbing_stairs_dfs.dart
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* Created Time: 2023-08-11
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* Author: liuyuxin (gvenusleo@gmail.com)
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*/
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/* 検索 */
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int dfs(int i) {
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// dp[1] と dp[2] は既知なので返す
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if (i == 1 || i == 2) return i;
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// dp[i] = dp[i-1] + dp[i-2]
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int count = dfs(i - 1) + dfs(i - 2);
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return count;
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}
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/* 階段登り：探索 */
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int climbingStairsDFS(int n) {
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return dfs(n);
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}
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/* Driver Code */
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void main() {
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int n = 9;
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int res = climbingStairsDFS(n);
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print("$n 段の階段の登り方は全部で $res 通り");
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}
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