The law increasing the minimum jail time for repeat violent offenders is categorized as:

The law increasing the minimum jail time for repeat violent offenders is categorized as statutory law because it is enacted by a legislative body. Statutory law consists of written laws that are established by legislative statutes and codes, which define the parameters for criminal behavior and the corresponding penalties. In this instance, the legislature has made a decision to impose stricter penalties specifically to address recidivism in violent offenses.

Common law, on the other hand, is derived from judicial decisions and historical legal precedents rather than written statutes. Administrative law governs the activities of administrative agencies created by legislative bodies, and case law refers to law established through the outcome of court cases based on particular facts and legal arguments. Thus, the nature of the law in question, being a product of legislative enactment aimed at addressing an issue in the criminal justice system, clearly categorizes it as statutory law.