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a[0]^= b[0]^= a[0]^= b[0]; 3 2 1 a[0]^= b[0];3 b[0]^= a[0];2 a[0]^= b[0];1 It's simply operator associativity.
a[0]^= b[0]^= a[0]^= b[0];
3 2 1
a[0]^= b[0];3
b[0]^= a[0];2
a[0]^= b[0];1
It's simply operator associativity.
Strings
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