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added 16 characters in body

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edited Jul 26, 2019 at 13:49

C# (Visual C# Interactive Compiler), 73 bytes

a=>b=>{int i=0;return a.Select(x=>x>45&&b.Contains(++i)?(char)(x^40):x);}

a=>b=>{int i=0;return a.Select(x=>x>45&&b.Contains(++i)?(char)(x^40):x);}

a=>b=>{int i=0;return a.Select(x=>x>45&&b.Contains(++i)?(char)(x^40):x);}

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created Jul 26, 2019 at 13:39

a=>b=>{int i=0;return a.Select(x=>x>45&&b.Contains(++i)?(char)(x^40):x);}