/*****************************************************問題描述*************************************************
Given a List of words, return the words that can be typed using letters of alphabet on only one row's of American
keyboard like the image below.
Example:
Input: ["Hello", "Alaska", "Dad", "Peace"]
Output: ["Alaska", "Dad"]
Note:
You may use one character in the keyboard more than once.
You may assume the input string will only contain letters of alphabet.
給定一個字符串數組，判斷這個數組中的每一個字符串，是否可以由標準鍵盤中的一行按鍵敲出，如果可以則返回這些單詞.
/*****************************************************我的解答*************************************************
/**
* @param {string[]} words
* @return {string[]}
*/
var findWords = function(words) {
var row1 = 'qwertyuiopQWERTYUIOP';
var row2 = 'asdfghjklASDFGHJKL';
var row3 = 'zxcvbnmZXCVBNM';
var retArray = [];
var isCanTypeInOneRow = function(str){
var rowPath1 = row1.indexOf(str.charAt(0));
var rowPath2 = row2.indexOf(str.charAt(0));
var rowPath3 = row3.indexOf(str.charAt(0));
var strPath = '';
if(rowPath1 !== -1)
{
strPath = row1;
}
if(rowPath2 !== -1)
{
strPath = row2;
}
if(rowPath3 !== -1)
{
strPath = row3;
}
for(var index = 1; index < str.length; index++)
{
if(strPath.indexOf(str.charAt(index)) == -1)
{
return false;
}
}
return true;
}
for(var index = 0; index < words.length; index++)
{
if(isCanTypeInOneRow(words[index]))
{
retArray.push(words[index]);
}
}
return retArray;
};
console.log(findWords(["Hello", "Alaska", "Dad", "Peace"]));
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