Package g1301_1400.s1370_increasing_decreasing_string

Class Solution

java.lang.Object

g1301_1400.s1370_increasing_decreasing_string.Solution

public class Solution
extends Object

1370 - Increasing Decreasing String\. Easy You are given a string `s`. Reorder the string using the following algorithm: 1. Pick the **smallest** character from `s` and **append** it to the result. 2. Pick the **smallest** character from `s` which is greater than the last appended character to the result and **append** it. 3. Repeat step 2 until you cannot pick more characters. 4. Pick the **largest** character from `s` and **append** it to the result. 5. Pick the **largest** character from `s` which is smaller than the last appended character to the result and **append** it. 6. Repeat step 5 until you cannot pick more characters. 7. Repeat the steps from 1 to 6 until you pick all characters from `s`. In each step, If the smallest or the largest character appears more than once you can choose any occurrence and append it to the result. Return _the result string after sorting_ `s` _with this algorithm_. **Example 1:** **Input:** s = "aaaabbbbcccc" **Output:** "abccbaabccba" **Explanation:** After steps 1, 2 and 3 of the first iteration, result = "abc" After steps 4, 5 and 6 of the first iteration, result = "abccba" First iteration is done. Now s = "aabbcc" and we go back to step 1 After steps 1, 2 and 3 of the second iteration, result = "abccbaabc" After steps 4, 5 and 6 of the second iteration, result = "abccbaabccba" **Example 2:** **Input:** s = "rat" **Output:** "art" **Explanation:** The word "rat" becomes "art" after re-ordering it with the mentioned algorithm. **Constraints:** * `1 <= s.length <= 500` * `s` consists of only lowercase English letters.

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
String	sortString(String s)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Solution

public Solution()

Method Details

sortString

public String sortString(String s)