81. JK Flip-Flop

module jk_ff (
    input  CLK,
    input  J,
    input  K,
    output reg Q
);
// Write your code here
    always @(posedge CLK) begin
        case({J, K})
            2'b00: begin
                Q <= Q;
            end
            2'b01: begin
                Q <= 0;
            end
            2'b10: begin
                Q <= 1;
            end
            2'b11: begin
                Q <= ~Q;
            end
        endcase
    end
endmodule