a = 10
b = 20
a = 20
b = 10
The test case is not correct.
I cleaned up the test.
duplicate of 262
swap algorithm without auxiliary variables
Rotate input square matrix 90 degrees CCW without rot90
Change the sign of even index entries of the reversed vector
Sum of the Matrix Elements
length of a vector
Remove the Zero
Find 100 from a Matrix and Replace With 0 with less computation time
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