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feat: add solutions to lc problem: No.3170
No.3170.Lexicographically Minimum String After Removing Stars
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‎solution/3100-3199/3170.Lexicographically Minimum String After Removing Stars/README.md‎

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Original file line numberDiff line numberDiff line change
@@ -235,6 +235,81 @@ function clearStars(s: string): string {
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}
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```
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#### Rust
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```rust
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impl Solution {
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pub fn clear_stars(s: String) -> String {
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let n = s.len();
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let s_bytes = s.as_bytes();
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let mut g: Vec<Vec<usize>> = vec![vec![]; 26];
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let mut rem = vec![false; n];
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let chars: Vec<char> = s.chars().collect();
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for (i, &ch) in chars.iter().enumerate() {
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if ch == '*' {
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rem[i] = true;
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for j in 0..26 {
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if let Some(idx) = g[j].pop() {
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rem[idx] = true;
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break;
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}
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}
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} else {
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g[(ch as u8 - b'a') as usize].push(i);
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}
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}
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chars
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.into_iter()
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.enumerate()
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.filter_map(|(i, ch)| if !rem[i] { Some(ch) } else { None })
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.collect()
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}
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}
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```
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#### C#
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```cs
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public class Solution {
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public string ClearStars(string s) {
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int n = s.Length;
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List<int>[] g = new List<int>[26];
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for (int i = 0; i < 26; i++) {
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g[i] = new List<int>();
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}
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bool[] rem = new bool[n];
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for (int i = 0; i < n; i++) {
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char ch = s[i];
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if (ch == '*') {
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rem[i] = true;
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for (int j = 0; j < 26; j++) {
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if (g[j].Count > 0) {
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int idx = g[j][g[j].Count - 1];
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g[j].RemoveAt(g[j].Count - 1);
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rem[idx] = true;
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break;
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}
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}
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} else {
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g[ch - 'a'].Add(i);
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}
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}
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var ans = new System.Text.StringBuilder();
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for (int i = 0; i < n; i++) {
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if (!rem[i]) {
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ans.Append(s[i]);
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}
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}
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return ans.ToString();
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}
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}
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```
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238313
<!-- tabs:end -->
239314

240315
<!-- solution:end -->

‎solution/3100-3199/3170.Lexicographically Minimum String After Removing Stars/README_EN.md‎

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Original file line numberDiff line numberDiff line change
@@ -233,6 +233,81 @@ function clearStars(s: string): string {
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}
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```
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#### Rust
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```rust
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impl Solution {
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pub fn clear_stars(s: String) -> String {
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let n = s.len();
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let s_bytes = s.as_bytes();
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let mut g: Vec<Vec<usize>> = vec![vec![]; 26];
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let mut rem = vec![false; n];
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let chars: Vec<char> = s.chars().collect();
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for (i, &ch) in chars.iter().enumerate() {
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if ch == '*' {
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rem[i] = true;
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for j in 0..26 {
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if let Some(idx) = g[j].pop() {
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rem[idx] = true;
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break;
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}
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}
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} else {
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g[(ch as u8 - b'a') as usize].push(i);
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}
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}
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chars
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.into_iter()
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.enumerate()
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.filter_map(|(i, ch)| if !rem[i] { Some(ch) } else { None })
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.collect()
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}
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}
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```
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#### C#
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```cs
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public class Solution {
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public string ClearStars(string s) {
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int n = s.Length;
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List<int>[] g = new List<int>[26];
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for (int i = 0; i < 26; i++) {
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g[i] = new List<int>();
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}
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bool[] rem = new bool[n];
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for (int i = 0; i < n; i++) {
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char ch = s[i];
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if (ch == '*') {
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rem[i] = true;
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for (int j = 0; j < 26; j++) {
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if (g[j].Count > 0) {
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int idx = g[j][g[j].Count - 1];
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g[j].RemoveAt(g[j].Count - 1);
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rem[idx] = true;
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break;
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}
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}
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} else {
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g[ch - 'a'].Add(i);
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}
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}
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var ans = new System.Text.StringBuilder();
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for (int i = 0; i < n; i++) {
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if (!rem[i]) {
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ans.Append(s[i]);
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}
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}
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return ans.ToString();
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}
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}
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```
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236311
<!-- tabs:end -->
237312

238313
<!-- solution:end -->

‎solution/3100-3199/3170.Lexicographically Minimum String After Removing Stars/Solution.cs‎

Lines changed: 36 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,36 @@
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public class Solution {
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public string ClearStars(string s) {
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int n = s.Length;
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List<int>[] g = new List<int>[26];
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for (int i = 0; i < 26; i++) {
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g[i] = new List<int>();
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}
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bool[] rem = new bool[n];
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for (int i = 0; i < n; i++) {
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char ch = s[i];
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if (ch == '*') {
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rem[i] = true;
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for (int j = 0; j < 26; j++) {
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if (g[j].Count > 0) {
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int idx = g[j][g[j].Count - 1];
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g[j].RemoveAt(g[j].Count - 1);
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rem[idx] = true;
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break;
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}
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}
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} else {
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g[ch - 'a'].Add(i);
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}
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}
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var ans = new System.Text.StringBuilder();
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for (int i = 0; i < n; i++) {
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if (!rem[i]) {
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ans.Append(s[i]);
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}
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}
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return ans.ToString();
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}
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}

‎solution/3100-3199/3170.Lexicographically Minimum String After Removing Stars/Solution.rs‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,29 @@
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impl Solution {
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pub fn clear_stars(s: String) -> String {
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let n = s.len();
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let s_bytes = s.as_bytes();
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let mut g: Vec<Vec<usize>> = vec![vec![]; 26];
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let mut rem = vec![false; n];
7+
let chars: Vec<char> = s.chars().collect();
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for (i, &ch) in chars.iter().enumerate() {
10+
if ch == '*' {
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rem[i] = true;
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for j in 0..26 {
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if let Some(idx) = g[j].pop() {
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rem[idx] = true;
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break;
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}
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}
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} else {
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g[(ch as u8 - b'a') as usize].push(i);
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}
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}
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chars
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.into_iter()
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.enumerate()
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.filter_map(|(i, ch)| if !rem[i] { Some(ch) } else { None })
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.collect()
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}
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}

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