solves #2255: Count Prefixes of a Given String

 in java

Author: anishLearnsToCode

README.md

@@ -730,8 +730,8 @@
 | 2236 | [Root Equals Sum of Children](https://leetcode.com/problems/root-equals-sum-of-children)                                                                               |                                                                                   [![Java](assets/java.png)](src/RootEqualsSumOfChildren.java)                                                                                   |                                                                                                                                   |
 | 2239 | [Find Closest Number to Zero](https://leetcode.com/problems/find-closest-number-to-zero)                                                                               |                                                                                   [![Java](assets/java.png)](src/FindClosestNumberToZero.java)                                                                                   |                                                                                                                                   |
 | 2243 | [Calculate Digit Sum of a String](https://leetcode.com/problems/calculate-digit-sum-of-a-string)                                                                       |                                                                                 [![Java](assets/java.png)](src/CalculateDigitSumOfAString.java)                                                                                  |                                                                                                                                   |
-| 2248 | [Intersection of Multiple Arrays](https://leetcode.com/problems/intersection-of-multiple-arrays)                                                                       |                                                                                  [![Java](assets/java.png)](src/IntersectionOfMultipleArrays.java)                                                                                   |                                                                                                                                   |
-| 2255 | [Count Prefixes of a Given String](https://leetcode.com/problems/count-prefixes-of-a-given-string)                                                                     |                                                                                                                                                                                                                                  |                                                                                                                                   |
+| 2248 | [Intersection of Multiple Arrays](https://leetcode.com/problems/intersection-of-multiple-arrays)                                                                       |                                                                                [![Java](assets/java.png)](src/IntersectionOfMultipleArrays.java)                                                                                 |                                                                                                                                   |
+| 2255 | [Count Prefixes of a Given String](https://leetcode.com/problems/count-prefixes-of-a-given-string)                                                                     |                                                                                 [![Java](assets/java.png)](src/CountPrefixesOfAGivenString.java)                                                                                 |                                                                                                                                   |
 | 2259 | [Remove Digit From Number to Maximize Result](https://leetcode.com/problems/remove-digit-from-number-to-maximize-result)                                               |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 2264 | [Largest 3-Same-Digit Number in String](https://leetcode.com/problems/largest-3-same-digit-number-in-string)                                                           |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 2269 | [Find the K-Beauty of a Number](https://leetcode.com/problems/find-the-k-beauty-of-a-number)                                                                           |                                                                                                                                                                                                                                  |                                                                                                                                   |

src/CountPrefixesOfAGivenString.java

@@ -0,0 +1,13 @@
+// https://leetcode.com/problems/count-prefixes-of-a-given-string
+// T: O(|words| * |s|)
+// S: O(1)
+
+public class CountPrefixesOfAGivenString {
+    public int countPrefixes(String[] words, String s) {
+        int result = 0;
+        for (String word : words) {
+            if (s.startsWith(word)) result++;
+        }
+        return result;
+    }
+}