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Commit 3b2e551

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feat: add solutions to lc problem: No.1961
No.1961.Check If String Is a Prefix of Array
1 parent 1c88423 commit 3b2e551

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6 files changed

+144
-2
lines changed

6 files changed

+144
-2
lines changed

‎solution/1900-1999/1961.Check If String Is a Prefix of Array/README.md‎

Lines changed: 51 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -53,15 +53,65 @@ s 可以由 "i"、"love" 和 "leetcode" 相连得到。
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<!-- 这里可写当前语言的特殊实现逻辑 -->
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```python
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class Solution:
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def isPrefixString(self, s: str, words: List[str]) -> bool:
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t = 0
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for i, w in enumerate(words):
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t += len(w)
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if len(s) == t:
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return ''.join(words[:i + 1]) == s
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return False
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```
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### **Java**
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<!-- 这里可写当前语言的特殊实现逻辑 -->
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```java
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class Solution {
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public boolean isPrefixString(String s, String[] words) {
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StringBuilder t = new StringBuilder();
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for (String w : words) {
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t.append(w);
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if (s.length() == t.length()) {
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return s.equals(t.toString());
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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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```
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### **C++**
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```cpp
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class Solution {
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public:
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bool isPrefixString(string s, vector<string>& words) {
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string t = "";
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for (string& w : words)
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{
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t += w;
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if (t.size() == s.size()) return t == s;
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}
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return false;
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}
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};
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```
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### **Go**
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```go
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func isPrefixString(s string, words []string) bool {
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t := ""
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for _, w := range words {
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t += w
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if t == s {
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return true
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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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### **...**

‎solution/1900-1999/1961.Check If String Is a Prefix of Array/README_EN.md‎

Lines changed: 51 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -45,13 +45,63 @@ It is impossible to make s using a prefix of arr.</pre>
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### **Python3**
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```python
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class Solution:
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def isPrefixString(self, s: str, words: List[str]) -> bool:
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t = 0
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for i, w in enumerate(words):
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t += len(w)
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if len(s) == t:
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return ''.join(words[:i + 1]) == s
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return False
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```
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### **Java**
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```java
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class Solution {
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public boolean isPrefixString(String s, String[] words) {
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StringBuilder t = new StringBuilder();
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for (String w : words) {
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t.append(w);
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if (s.length() == t.length()) {
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return s.equals(t.toString());
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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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```
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### **C++**
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```cpp
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class Solution {
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public:
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bool isPrefixString(string s, vector<string>& words) {
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string t = "";
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for (string& w : words)
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{
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t += w;
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if (t.size() == s.size()) return t == s;
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}
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return false;
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}
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};
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```
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### **Go**
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```go
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func isPrefixString(s string, words []string) bool {
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t := ""
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for _, w := range words {
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t += w
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if t == s {
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return true
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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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### **...**
Lines changed: 12 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,12 @@
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class Solution {
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public:
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bool isPrefixString(string s, vector<string>& words) {
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string t = "";
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for (string& w : words)
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{
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t += w;
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if (t.size() == s.size()) return t == s;
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}
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return false;
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}
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};
Lines changed: 10 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,10 @@
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func isPrefixString(s string, words []string) bool {
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t := ""
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for _, w := range words {
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t += w
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if t == s {
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return true
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}
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}
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return false
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}
Lines changed: 12 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,12 @@
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class Solution {
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public boolean isPrefixString(String s, String[] words) {
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StringBuilder t = new StringBuilder();
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for (String w : words) {
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t.append(w);
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if (s.length() == t.length()) {
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return s.equals(t.toString());
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}
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}
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return false;
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}
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}
Lines changed: 8 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,8 @@
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class Solution:
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def isPrefixString(self, s: str, words: List[str]) -> bool:
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t = 0
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for i, w in enumerate(words):
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t += len(w)
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if len(s) == t:
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return ''.join(words[:i + 1]) == s
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return False

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