Palindrome Rearranging
Description
Given a string, find out if its characters can be rearranged to form a palindrome.
Note: A palindrome is a string that reads the same left-to-right and right-to-left.
Example
For inputString = "aabb", the output should be
palindromeRearranging(inputString) = true.
We can rearrange "aabb" to make "abba", which is a palindrome.
Input/Output
-
[execution time limit] 4 seconds (js)
-
[input] string inputString
A string consisting of lowercase English letters.
Guaranteed constraints:
1 ≤ inputString.length ≤ 50.
- [output] boolean
true if the characters of the inputString can be rearranged to form a palindrome, false otherwise.
[JavaScript (ES6)] Syntax Tips
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// Prints help message to the console
// Returns a string
function helloWorld(name) {
console.log("This prints to the console when you Run Tests");
return "Hello, " + name;
}
Solution
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function palindromeRearranging(inputString) {
var odd = 0;
var arr = inputString.split('');
var el;
var pos;
while (arr.length) {
el = arr.pop();
pos = arr.indexOf(el);
if (pos <0) {
odd++;
} else {
arr.splice(pos,1);
}
}
return odd <2;
}