Merge pull request #308 from tiennguyen2310/patch-92

Create ValidWord.java

Author: abhishektripathi66

src/codingquestions/leetcode/ValidWord.java

@@ -0,0 +1,94 @@
+/*
+3136. Valid Word
+Solved
+Easy
+Topics
+premium lock icon
+Companies
+Hint
+A word is considered valid if:
+
+It contains a minimum of 3 characters.
+It contains only digits (0-9), and English letters (uppercase and lowercase).
+It includes at least one vowel.
+It includes at least one consonant.
+You are given a string word.
+
+Return true if word is valid, otherwise, return false.
+
+Notes:
+
+'a', 'e', 'i', 'o', 'u', and their uppercases are vowels.
+A consonant is an English letter that is not a vowel.
+ 
+
+Example 1:
+
+Input: word = "234Adas"
+
+Output: true
+
+Explanation:
+
+This word satisfies the conditions.
+
+Example 2:
+
+Input: word = "b3"
+
+Output: false
+
+Explanation:
+
+The length of this word is fewer than 3, and does not have a vowel.
+
+Example 3:
+
+Input: word = "a3$e"
+
+Output: false
+
+Explanation:
+
+This word contains a '$' character and does not have a consonant.
+
+ 
+
+Constraints:
+
+1 <= word.length <= 20
+word consists of English uppercase and lowercase letters, digits, '@', '#', and '$'.
+*/
+class Solution {
+    private char[] vowels = {'a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U'};
+
+    private boolean isVowel(char c){
+        for(char v : vowels){
+            if(v == c)
+                return true;
+        }
+        return false;
+    }
+
+    public boolean isValid(String word) {
+        if(word.length() < 3) 
+            return false;
+        
+        int cntvowel = 0, cntconsonant = 0;
+        for(char c : word.toCharArray()){
+            if(c >= '0' && c <= '9')
+                continue;
+            
+            if((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')){
+                if(isVowel(c))
+                    cntvowel++;
+                else
+                    cntconsonant++;
+            }
+            else
+                return false;
+        }
+
+        return (cntvowel > 0 && cntconsonant > 0);
+    }
+}