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anishLearnsToCodeanishLearnsToCode
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solves keyboar row in java and python
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‎README.md

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# Leetcode Algorithms
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![problems-solved](https://img.shields.io/badge/Problems%20Solved-106/1412-1f425f.svg)
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![problems-solved-java](https://img.shields.io/badge/Java-106/1412-1abc9c.svg)
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![problems-solved-python](https://img.shields.io/badge/Python-19/1412-1abc9c.svg)
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![problems-solved](https://img.shields.io/badge/Problems%20Solved-107/1412-1f425f.svg)
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![problems-solved-java](https://img.shields.io/badge/Java-107/1412-1abc9c.svg)
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![problems-solved-python](https://img.shields.io/badge/Python-20/1412-1abc9c.svg)
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[![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](CONTRIBUTING.md)
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## Problems
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| 485 | [Max Consecutive Ones](https://leetcode.com/problems/max-consecutive-ones) | Easy | [![Java](https://img.icons8.com/color/40/000000/java-coffee-cup-logo.png)](src/MaxConsecutiveOnes.java) |
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| 492 | [Construct the Rectangle](https://leetcode.com/problems/construct-the-rectangle) | Easy | [![Java](https://img.icons8.com/color/40/000000/java-coffee-cup-logo.png)](src/ConstructTheRectangle.java) [![Python](https://img.icons8.com/color/35/000000/python.png)](python/construct_the_rectangle.py) |
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| 496 | [Next Greater Element I](https://leetcode.com/problems/next-greater-element-i) | Easy | [![Java](https://img.icons8.com/color/40/000000/java-coffee-cup-logo.png)](src/NextGreaterElementI.java) [![Python](https://img.icons8.com/color/35/000000/python.png)](python/next_greater_element_i.py) |
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| 500 | [Keyboard Row](https://leetcode.com/problems/keyboard-row) | Easy | |
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| 500 | [Keyboard Row](https://leetcode.com/problems/keyboard-row) | Easy | [![Java](https://img.icons8.com/color/40/000000/java-coffee-cup-logo.png)](src/KeyBoardRow.java) [![Python](https://img.icons8.com/color/35/000000/python.png)](python/keyboard_row.py) |
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| 501 | [Find Mode in Binary Search Tree](https://leetcode.com/problems/find-mode-in-binary-search-tree) | Easy | |
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| 504 | [Base 7](https://leetcode.com/problems/base-7) | Easy | |
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| 506 | [Relative Ranks](https://leetcode.com/problems/relative-ranks) | Easy | |

‎python/keyboard_row.py

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from typing import List
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class Solution:
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def __init__(self):
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self.alphabetPosition = {
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'q': 1,
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'w': 1,
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'e': 1,
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'r': 1,
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't': 1,
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'y': 1,
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'u': 1,
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'i': 1,
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'o': 1,
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'p': 1,
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'a': 2,
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's': 2,
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'd': 2,
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'f': 2,
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'g': 2,
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'h': 2,
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'j': 2,
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'k': 2,
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'l': 2,
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'z': 3,
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'x': 3,
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'c': 3,
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'v': 3,
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'b': 3,
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'n': 3,
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'm': 3,
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}
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def findWords(self, words: List[str]) -> List[str]:
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result = []
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for word in words:
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if self.singleRowWord(word.lower()):
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result.append(word)
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return result
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def singleRowWord(self, word: str) -> bool:
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row = self.alphabetPosition[word[0]]
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for index in range(1, len(word)):
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if self.alphabetPosition[word[index]] != row:
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return False
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return True

‎src/KeyBoardRow.java

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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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public class KeyBoardRow {
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private static final Map<Character, Integer> alphabetPosition = new HashMap<>();
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static {
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alphabetPosition.put('Q', 1);
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alphabetPosition.put('W', 1);
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alphabetPosition.put('E', 1);
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alphabetPosition.put('R', 1);
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alphabetPosition.put('T', 1);
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alphabetPosition.put('Y', 1);
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alphabetPosition.put('U', 1);
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alphabetPosition.put('I', 1);
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alphabetPosition.put('O', 1);
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alphabetPosition.put('P', 1);
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alphabetPosition.put('A', 2);
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alphabetPosition.put('S', 2);
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alphabetPosition.put('D', 2);
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alphabetPosition.put('F', 2);
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alphabetPosition.put('G', 2);
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alphabetPosition.put('H', 2);
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alphabetPosition.put('J', 2);
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alphabetPosition.put('K', 2);
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alphabetPosition.put('L', 2);
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alphabetPosition.put('Z', 3);
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alphabetPosition.put('X', 3);
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alphabetPosition.put('C', 3);
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alphabetPosition.put('V', 3);
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alphabetPosition.put('B', 3);
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alphabetPosition.put('N', 3);
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alphabetPosition.put('M', 3);
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}
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public static String[] findWords(String[] words) {
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List<String> result = new ArrayList<>();
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for (String word : words) {
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if (singleRowWord(word.toUpperCase())) {
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result.add(word);
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}
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}
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return arrayListToArray(result);
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}
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private static String[] arrayListToArray(List<String> list) {
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String[] result = new String[list.size()];
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for (int index = 0 ; index < result.length ; index++) {
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result[index] = list.get(index);
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}
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return result;
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}
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private static boolean singleRowWord(String word) {
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int row = alphabetPosition.get(word.charAt(0));
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for (int index = 1 ; index < word.length() ; index++) {
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if (row != alphabetPosition.get(word.charAt(index))) {
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return false;
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}
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}
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return true;
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}
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}

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