Respuesta:
[1, 2, 0, 1, 2, 3]
acc se inicializa con [1, 2]. En el return de la función concatenamos este valor de inicialización con el arreglo anidado.
acc
[1, 2]
return
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Respuesta:
[1, 2, 0, 1, 2, 3]accse inicializa con[1, 2]. En elreturnde la funciónconcatenamos este valor de inicialización con el arreglo anidado.