JDK 1.8
The project is built with the Gradle wrapper, gradlew or gradlew.bat on Windows.
gradlew test
gradlew run -Pinput=sqrrqabccbatudefggfedvwhijkllkjihxymnnmzpop
Alexs-MBP:palindrome alex$ ./gradlew run -Pinput=sqrrqabccbatudefggfedvwhijkllkjihxymnnmzpop
:compileJava UP-TO-DATE
:compileGroovy NO-SOURCE
:processResources NO-SOURCE
:classes UP-TO-DATE
:run
Text: hijkllkjih, Index: 23, Length: 10
Text: defggfed, Index: 13, Length: 8
Text: abccba, Index: 5, Length: 6
BUILD SUCCESSFUL
Total time: 1.12 secs