solves #3142: Check if Grid Satisfies Conditions in java

Author: anishLearnsToCode

Diff for: README.md

@@ -908,8 +908,8 @@
 | 3120 | [Count the Number of Special Characters I](https://leetcode.com/problems/count-the-number-of-special-characters-i)                                                     |                                                                             [![Java](assets/java.png)](src/CountTheNumberOfSpecialCharactersI.java)                                                                              |                                                                                                                                   |
 | 3127 | [Make a Square with the Same Color](https://leetcode.com/problems/make-a-square-with-the-same-color)                                                                   |                                                                                 [![Java](assets/java.png)](src/MakeASquareWithTheSameColor.java)                                                                                 |                                                                                                                                   |
 | 3131 | [Find the Integer Added to Array I](https://leetcode.com/problems/find-the-integer-added-to-array-i)                                                                   |                                                                                 [![Java](assets/java.png)](src/FindTheIntegerAddedToArrayI.java)                                                                                 |                                                                                                                                   |
-| 3136 | [Valid Word](https://leetcode.com/problems/valid-word)                                                                                                                 |                                                                                                                                                                                                                                  |                                                                                                                                   |
-| 3142 | [Check if Grid Satisfies Conditions](https://leetcode.com/problems/check-if-grid-satisfies-conditions)                                                                 |                                                                                                                                                                                                                                  |                                                                                                                                   |
+| 3136 | [Valid Word](https://leetcode.com/problems/valid-word)                                                                                                                 |                                                                                          [![Java](assets/java.png)](src/ValidWord.java)                                                                                          |                                                                                                                                   |
+| 3142 | [Check if Grid Satisfies Conditions](https://leetcode.com/problems/check-if-grid-satisfies-conditions)                                                                 |                                                                               [![Java](assets/java.png)](src/CheckIfGridSatisfiesConditions.java)                                                                                |                                                                                                                                   |
 | 3146 | [Permutation Difference between Two Strings](https://leetcode.com/problems/permutation-difference-between-two-strings)                                                 |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 3151 | [Special Array I](https://leetcode.com/problems/special-array-i)                                                                                                       |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 3158 | [Find the XOR of Numbers Which Appear Twice](https://leetcode.com/problems/find-the-xor-of-numbers-which-appear-twice)                                                 |                                                                                                                                                                                                                                  |                                                                                                                                   |

Diff for: src/CheckIfGridSatisfiesConditions.java

@@ -0,0 +1,19 @@
+// https://leetcode.com/problems/check-if-grid-satisfies-conditions
+// T: O(m * n)
+// S: O(1)
+
+public class CheckIfGridSatisfiesConditions {
+    public boolean satisfiesConditions(int[][] grid) {
+        for (int i = 0 ; i < grid.length ; i++) {
+            for (int j = 0 ; j < grid[i].length ; j++) {
+                if (j + 1 < grid[i].length && grid[i][j] == grid[i][j + 1]) {
+                    return false;
+                }
+                if (i + 1 < grid.length && grid[i][j] != grid[i + 1][j]) {
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+}

Diff for: src/ValidWord.java

@@ -0,0 +1,40 @@
+// https://leetcode.com/problems/valid-word
+// T: O(N)
+// S: O(1)
+
+import java.util.Set;
+
+public class ValidWord {
+    private static final Set<Character> VOWELS = Set.of('a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U');
+
+    public boolean isValid(String word) {
+        return word.length() >= 3 && isAlphaNum(word) && hasOneVowel(word) && hasOneConsonant(word);
+    }
+
+    private static boolean isAlphaNum(String s) {
+        for (int i = 0 ; i < s.length() ; i++) {
+            if (!Character.isAlphabetic(s.charAt(i)) && !Character.isDigit(s.charAt(i))) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    private static boolean hasOneVowel(String s) {
+        for (int i = 0 ; i < s.length() ; i++) {
+            if (VOWELS.contains(s.charAt(i))) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private static boolean hasOneConsonant(String s) {
+        for (int i = 0 ; i < s.length() ; i++) {
+            if (Character.isAlphabetic(s.charAt(i)) && !VOWELS.contains(s.charAt(i))) {
+                return true;
+            }
+        }
+        return false;
+    }
+}