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（1）西門子PLC(用的FC,帶變長數組功能）
IF   #enable = 1 THEN                                 //使能
    #tempup := UPPER_BOUND(ARR := #array, DIM := 1);//讀取數組上限
    #templow := LOWER_BOUND(ARR := #array, DIM := 1);//讀取數組下限

    FOR #i := #templow TO #tempup BY 1 DO               //外循環
        FOR #j := #templow TO (#tempup - #i - 1) BY 1 DO;//內循環
            //升序
            IF #array[#j] > #array[#j + 1] THEN       //前后字比較，條件移位
                #temp := #array[#j + 1];
                #array[#j + 1] := #array[#j];
                #array[#j] := #temp;
            END_IF;
        END_FOR;
    END_FOR;
END_IF;
（2）三菱PLC（只能用FB創建）
IF i_enable = 1 THEN                    //使能
FOR ii := 0 TO i_number DO;            //外循環
    FOR jj := 0 TO (i_number -ii)DO;//內循環
        //升序
        IF i_array[jj] >i_array[jj+1]THEN    //前后字比較，條件移位
            temp:= i_array[jj+1];
            i_array[jj+1]:=i_array[jj];
            i_array[jj]:=temp
            ;
        END_IF;    
    END_FOR;    
END_FOR;
END_IF;