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c#How to reverse the words in a phrase

("This tests that").Split(' ').Aggregate((a,b) => b + " " + a);ctrl + c
.Split(' ')

splits a string by using a space ' ' separator


gather every one other element a, in an element list to a target element b

(a,b) => b + " " + a

arrow function taking input arguments (a,b) used to concatenate b gathered character argument in the list in reverse with " " space separator to the targeted character argument a