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via Coderanch by fady zohdy, 1 year ago
This exception has no message.
java.lang.NullPointerException at SortMountains$NameComparator.compare(SortMountains.java:8) at SortMountains$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 SortMountains.go(SortMountains.java:26) at SortMountains.main(SortMountains.java:17)