How to sort 2D array in Java

My code : Arrays.sort(intervals, new Comparator<int[]>(){ @Override public int compare( int[] a, int[] b ){ return a[0]==b[0] ? a[1] – b[1] : a[0] – b[0]; // return Integer.compare( a[0], b[0] ); } }); And here is an simple way: Arrays.sort(myArr, (a, b) -> a[0] – b[0]);

Sort List

This is No.148 Problem in LeetCode. Here are two approaches as below: Top Down Merge Sort Recursively split the original list into two halves. The split continues until there is only one node in the linked list (Divide phase). To split the list into two halves, we find the middle of the linked list using …

An example to overwrite comparator in method to customize sorting of array

I still feel confused when I want to customize the way of sorting for array and collections in java. And here is a good example of how to write a customized sorting function to sort string array: Comparator<String> comp = new Comparator<String>(){ @Override public int compare(String str1, String str2){ String s1 = str1 + str2; …

what is difference between “wrap content” and “match constraint” in android studio

fill_parent (deprecated and renamed MATCH_PARENT in API Level 8 and higher) Setting the layout of a widget to fill_parent will force it to expand to take up as much space as is available within the layout element it’s been placed in. It’s roughly equivalent of setting the dockstyle of a Windows Form Control to Fill. …