From f0ac0b2efd588164b74632e75a6c4358e2357781 Mon Sep 17 00:00:00 2001 From: fwqaaq Date: 2023年7月23日 18:57:41 +0800 Subject: [PATCH 1/4] =?UTF-8?q?Update=200115.=E4=B8=8D=E5=90=8C=E7=9A=84?= =?UTF-8?q?=E5=AD=90=E5=BA=8F=E5=88=97.md=20about=20rust?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...04345円255円220円345円272円217円345円210円227円.md" | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git "a/problems/0115.344円270円215円345円220円214円347円232円204円345円255円220円345円272円217円345円210円227円.md" "b/problems/0115.344円270円215円345円220円214円347円232円204円345円255円220円345円272円217円345円210円227円.md" index 8c82880d58..56516132ba 100644 --- "a/problems/0115.344円270円215円345円220円214円347円232円204円345円255円220円345円272円217円345円210円227円.md" +++ "b/problems/0115.344円270円215円345円220円214円347円232円204円345円255円220円345円272円217円345円210円227円.md" @@ -311,7 +311,31 @@ function numDistinct(s: string, t: string): number { }; ``` +Rust: +```rust +impl Solution { + pub fn num_distinct(s: String, t: String) -> i32 { + if s.len() < t.len() { + return 0; + } + let mut dp = vec![vec![0; s.len() + 1]; t.len() + 1]; + // i = 0, t 为空字符串,s 作为子序列的个数为 1(删除 s 所有元素) + dp[0] = vec![1; s.len() + 1]; + for (i, char_t) in t.chars().enumerate() { + for (j, char_s) in s.chars().enumerate() { + if char_t == char_s { + // t 的前 i 个字符在 s 的前 j 个字符中作为子序列的个数 + dp[i + 1][j + 1] = dp[i][j] + dp[i + 1][j]; + continue; + } + dp[i + 1][j + 1] = dp[i + 1][j]; + } + } + dp[t.len()][s.len()] + } +} +```

From aaa8cc2443a9a05e5af3acae67d7f593c7c34077 Mon Sep 17 00:00:00 2001 From: fwqaaq Date: 2023年7月23日 19:40:19 +0800 Subject: [PATCH 2/4] =?UTF-8?q?Update=200115.=E4=B8=8D=E5=90=8C=E7=9A=84?= =?UTF-8?q?=E5=AD=90=E5=BA=8F=E5=88=97.md?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...04345円255円220円345円272円217円345円210円227円.md" | 30 +++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git "a/problems/0115.344円270円215円345円220円214円347円232円204円345円255円220円345円272円217円345円210円227円.md" "b/problems/0115.344円270円215円345円220円214円347円232円204円345円255円220円345円272円217円345円210円227円.md" index 56516132ba..91f35291cb 100644 --- "a/problems/0115.344円270円215円345円220円214円347円232円204円345円255円220円345円272円217円345円210円227円.md" +++ "b/problems/0115.344円270円215円345円220円214円347円232円204円345円255円220円345円272円217円345円210円227円.md" @@ -337,6 +337,36 @@ impl Solution { } ``` +> 滚动数组 + +```rust +impl Solution { + pub fn num_distinct(s: String, t: String) -> i32 { + if s.len() < t.len() { + return 0; + } + let (s, t) = (s.into_bytes(), t.into_bytes()); + // 对于 t 为空字符串,s 作为子序列的个数为 1(删除 s 所有元素) + let mut dp = vec![1; s.len() + 1]; + for char_t in t { + // dp[i - 1][j - 1],dp[j + 1] 更新之前的值 + let mut pre = dp[0]; + // 当开始遍历 t,s 的前 0 个字符无法包含任意子序列 + dp[0] = 0; + for (j, &char_s) in s.iter().enumerate() { + let temp = dp[j + 1]; + if char_t == char_s { + dp[j + 1] = pre + dp[j]; + } else { + dp[j + 1] = dp[j]; + } + pre = temp; + } + } + dp[s.len()] + } +} +```

From 0a83ee2c20c1b1294a2de20f58526755caa785e8 Mon Sep 17 00:00:00 2001 From: fwqaaq Date: 2023年7月23日 19:52:17 +0800 Subject: [PATCH 3/4] =?UTF-8?q?Update=200583.=E4=B8=A4=E4=B8=AA=E5=AD=97?= =?UTF-8?q?=E7=AC=A6=E4=B8=B2=E7=9A=84=E5=88=A0=E9=99=A4=E6=93=8D=E4=BD=9C?= =?UTF-8?q?.md=20about=20rust?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...40351円231円244円346円223円215円344円275円234円.md" | 26 ++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) diff --git "a/problems/0583.344円270円244円344円270円252円345円255円227円347円254円246円344円270円262円347円232円204円345円210円240円351円231円244円346円223円215円344円275円234円.md" "b/problems/0583.344円270円244円344円270円252円345円255円227円347円254円246円344円270円262円347円232円204円345円210円240円351円231円244円346円223円215円344円275円234円.md" index 48d15b0ba9..45e62f7d0f 100644 --- "a/problems/0583.344円270円244円344円270円252円345円255円227円347円254円246円344円270円262円347円232円204円345円210円240円351円231円244円346円223円215円344円275円234円.md" +++ "b/problems/0583.344円270円244円344円270円252円345円255円227円347円254円246円344円270円262円347円232円204円345円210円240円351円231円244円346円223円215円344円275円234円.md" @@ -368,7 +368,31 @@ function minDistance(word1: string, word2: string): number { }; ``` - +Rust: + +```rust +impl Solution { + pub fn min_distance(word1: String, word2: String) -> i32 { + let mut dp = vec![vec![0; word2.len() + 1]; word1.len() + 1]; + for i in 0..word1.len() { + dp[i + 1][0] = i + 1; + } + for j in 0..word2.len() { + dp[0][j + 1] = j + 1; + } + for (i, char1) in word1.chars().enumerate() { + for (j, char2) in word2.chars().enumerate() { + if char1 == char2 { + dp[i + 1][j + 1] = dp[i][j]; + continue; + } + dp[i + 1][j + 1] = dp[i][j + 1].min(dp[i + 1][j]) + 1; + } + } + dp[word1.len()][word2.len()] as i32 + } +} +```

From d6bf0c52cae3da2f9842ba2a30be15099cd53280 Mon Sep 17 00:00:00 2001 From: fwqaaq Date: 2023年7月23日 20:00:17 +0800 Subject: [PATCH 4/4] =?UTF-8?q?Update=200583.=E4=B8=A4=E4=B8=AA=E5=AD=97?= =?UTF-8?q?=E7=AC=A6=E4=B8=B2=E7=9A=84=E5=88=A0=E9=99=A4=E6=93=8D=E4=BD=9C?= =?UTF-8?q?.md?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...40351円231円244円346円223円215円344円275円234円.md" | 20 +++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git "a/problems/0583.344円270円244円344円270円252円345円255円227円347円254円246円344円270円262円347円232円204円345円210円240円351円231円244円346円223円215円344円275円234円.md" "b/problems/0583.344円270円244円344円270円252円345円255円227円347円254円246円344円270円262円347円232円204円345円210円240円351円231円244円346円223円215円344円275円234円.md" index 45e62f7d0f..8b5ded3b8d 100644 --- "a/problems/0583.344円270円244円344円270円252円345円255円227円347円254円246円344円270円262円347円232円204円345円210円240円351円231円244円346円223円215円344円275円234円.md" +++ "b/problems/0583.344円270円244円344円270円252円345円255円227円347円254円246円344円270円262円347円232円204円345円210円240円351円231円244円346円223円215円344円275円234円.md" @@ -394,6 +394,26 @@ impl Solution { } ``` +> 版本 2 + +```rust +impl Solution { + pub fn min_distance(word1: String, word2: String) -> i32 { + let mut dp = vec![vec![0; word2.len() + 1]; word1.len() + 1]; + for (i, char1) in word1.chars().enumerate() { + for (j, char2) in word2.chars().enumerate() { + if char1 == char2 { + dp[i + 1][j + 1] = dp[i][j] + 1; + continue; + } + dp[i + 1][j + 1] = dp[i][j + 1].max(dp[i + 1][j]); + } + } + (word1.len() + word2.len() - 2 * dp[word1.len()][word2.len()]) as i32 + } +} +``` +

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