Sorting in descending order of list

Question

I have a list

m = {{a, 20}, {b, 10}, {c, 50}, {d, 5}, {e, 100}}

and I want to apply Sort on this in descending order on numbers only so that it looks like this

m = {{e, 100}, {c, 50}, {a, 20}, {b, 10}, {d, 5}}

How do I do that?

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rhermans · Answer 1 · 2019-06-12T15:53:03.647

10

Data

m = {{a, 20}, {b, 10}, {c, 50}, {d, 5} , {e, 100}}

Reverse[SortBy[m, Last]]

or

SortBy[m, Minus@*Last]

or since Mathematica v12

ReverseSortBy[Last][m]

{{e, 100}, {c, 50}, {a, 20}, {b, 10}, {d, 5}}

Where @* stands for Composition

edited Jun 12 '19 at 15:53

answered Oct 14 '15 at 15:43

rhermans