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via Coderanch by fady zohdy, 1 year ago
This exception has no message.
java.lang.NullPointerException: 	at undefined.SortMountains$NameComparator.compare(SortMountains.java:8)	at undefined.SortMountains$NameComparator.compare(SortMountains.java:6)	at java.util.TimSort.countRunAndMakeAscending(TimSort.java:324)	at java.util.TimSort.sort(TimSort.java:189)	at java.util.TimSort.sort(TimSort.java:173)	at java.util.Arrays.sort(Arrays.java:659)	at java.util.Collections.sort(Collections.java:217)	at undefined.SortMountains.go(SortMountains.java:26)	at undefined.SortMountains.main(SortMountains.java:17)