solves #2269: Find the K-Beauty of a Number in java

Author: anishLearnsToCode

README.md

@@ -733,8 +733,8 @@
 | 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)                                               |                                                                            [![Java](assets/java.png)](src/RemoveDigitFromNumberToMaximizeResult.java)                                                                            |                                                                                                                                   |
-| 2264 | [Largest 3-Same-Digit Number in String](https://leetcode.com/problems/largest-3-same-digit-number-in-string)                                                           |                                                                                 [![Java](assets/java.png)](src/Largest3SameDigitNumberInString.java)                                                                                 |                                                                                                                                   |
-| 2269 | [Find the K-Beauty of a Number](https://leetcode.com/problems/find-the-k-beauty-of-a-number)                                                                           |                                                                                                                                                                                                                                  |                                                                                                                                   |
+| 2264 | [Largest 3-Same-Digit Number in String](https://leetcode.com/problems/largest-3-same-digit-number-in-string)                                                           |                                                                               [![Java](assets/java.png)](src/Largest3SameDigitNumberInString.java)                                                                               |                                                                                                                                   |
+| 2269 | [Find the K-Beauty of a Number](https://leetcode.com/problems/find-the-k-beauty-of-a-number)                                                                           |                                                                                   [![Java](assets/java.png)](src/FindTheKBeautyOfANumber.java)                                                                                   |                                                                                                                                   |
 | 2273 | [Find Resultant Array After Removing Anagrams](https://leetcode.com/problems/find-resultant-array-after-removing-anagrams)                                             |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 2278 | [Percentage of Letter in String](https://leetcode.com/problems/percentage-of-letter-in-string)                                                                         |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 2283 | [Check if Number Has Equal Digit Count and Digit Value](https://leetcode.com/problems/check-if-number-has-equal-digit-count-and-digit-value)                           |                                                                                                                                                                                                                                  |                                                                                                                                   |

src/FindTheKBeautyOfANumber.java

@@ -0,0 +1,24 @@
+// https://leetcode.com/problems/find-the-k-beauty-of-a-number
+// T: O(|num|)
+// S: O(|num|)
+
+public class FindTheKBeautyOfANumber {
+    public int divisorSubstrings(int num, int k) {
+        int kBeauty = 0;
+        final String number = num + "";
+        for (int index = 0 ; index < number.length() - k + 1 ; index++) {
+            final String substring = number.substring(index, index + k);
+            final int divisor = toNumber(substring);
+            if (divisor != 0 && num % divisor == 0) kBeauty++;
+        }
+        return kBeauty;
+    }
+
+    private int toNumber(String string) {
+        int result = 0;
+        for (int i = 0; i < string.length() ; i++) {
+            result = 10 * result + (string.charAt(i) - '0');
+        }
+        return result;
+    }
+}