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Commit 5d4fd65

Browse files
feat: add rust solution to lc problem: No.65 (#2114)
1 parent f0ec4ac commit 5d4fd65

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3 files changed

+184
-0
lines changed

3 files changed

+184
-0
lines changed

‎solution/0000-0099/0065.Valid Number/README.md‎

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Original file line numberDiff line numberDiff line change
@@ -260,6 +260,71 @@ public class Solution {
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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 is_number(s: String) -> bool {
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let mut i = 0;
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let n = s.len();
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if let Some(c) = s.chars().nth(i) {
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if c == '+' || c == '-' {
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i += 1;
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if i == n {
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return false;
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}
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}
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}
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if let Some(x) = s.chars().nth(i) {
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if x == '.'
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&& (i + 1 == n
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|| if let Some(m) = s.chars().nth(i + 1) {
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m == 'e' || m == 'E'
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} else {
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false
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})
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{
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return false;
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}
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}
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let mut dot = 0;
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let mut e = 0;
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let mut j = i;
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while j < n {
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if let Some(c) = s.chars().nth(j) {
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if c == '.' {
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if e > 0 || dot > 0 {
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return false;
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}
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dot += 1;
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} else if c == 'e' || c == 'E' {
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if e > 0 || j == i || j == n - 1 {
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return false;
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}
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e += 1;
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if let Some(x) = s.chars().nth(j + 1) {
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if x == '+' || x == '-' {
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j += 1;
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if j == n - 1 {
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return false;
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}
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}
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}
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} else if !c.is_ascii_digit() {
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return false;
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}
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}
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j += 1;
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}
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true
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}
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}
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```
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### **...**
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```

‎solution/0000-0099/0065.Valid Number/README_EN.md‎

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Original file line numberDiff line numberDiff line change
@@ -248,6 +248,68 @@ public class Solution {
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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 is_number(s: String) -> bool {
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let mut i = 0;
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let n = s.len();
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if let Some(c) = s.chars().nth(i) {
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if c == '+' || c == '-' {
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i += 1;
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if i == n {
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return false;
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}
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}
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}
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if let Some(x) = s.chars().nth(i) {
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if
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x == '.' &&
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(i + 1 == n ||
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(if let Some(m) = s.chars().nth(i + 1) { m == 'e' || m == 'E' } else { false }))
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{
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return false;
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}
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}
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let mut dot = 0;
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let mut e = 0;
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let mut j = i;
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while j < n {
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if let Some(c) = s.chars().nth(j) {
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if c == '.' {
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if e > 0 || dot > 0 {
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return false;
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}
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dot += 1;
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} else if c == 'e' || c == 'E' {
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if e > 0 || j == i || j == n - 1 {
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return false;
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}
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e += 1;
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if let Some(x) = s.chars().nth(j + 1) {
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if x == '+' || x == '-' {
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j += 1;
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if j == n - 1 {
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return false;
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}
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}
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}
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} else if !c.is_ascii_digit() {
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return false;
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}
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}
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j += 1;
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}
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true
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}
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}
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```
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### **...**
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```
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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,57 @@
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impl Solution {
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pub fn is_number(s: String) -> bool {
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let mut i = 0;
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let n = s.len();
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if let Some(c) = s.chars().nth(i) {
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if c == '+' || c == '-' {
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i += 1;
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if i == n {
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return false;
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}
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}
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}
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if let Some(x) = s.chars().nth(i) {
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if
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x == '.' &&
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(i + 1 == n ||
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(if let Some(m) = s.chars().nth(i + 1) { m == 'e' || m == 'E' } else { false }))
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{
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return false;
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}
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}
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let mut dot = 0;
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let mut e = 0;
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let mut j = i;
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while j < n {
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if let Some(c) = s.chars().nth(j) {
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if c == '.' {
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if e > 0 || dot > 0 {
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return false;
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}
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dot += 1;
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} else if c == 'e' || c == 'E' {
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if e > 0 || j == i || j == n - 1 {
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return false;
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}
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e += 1;
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if let Some(x) = s.chars().nth(j + 1) {
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if x == '+' || x == '-' {
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j += 1;
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if j == n - 1 {
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return false;
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}
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}
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}
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} else if !c.is_ascii_digit() {
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return false;
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}
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}
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j += 1;
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}
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true
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}
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}

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