How to reset the sequence number for the sequence number in vector?

Reset the sequence number

I have 1 vector:

vec=[1, 2, 3, 4, 2, 1, 3, 8, 7, 9]

(lost 2 consecutive numbers 5, 6)

I want to reassign the above vector so that the sequence number is continuous.

That is, the above vector must be reset:

vec2=[1, 2, 3, 4, 2, 1, 3, 6, 5, 7]

How to do it, please help.

[madhan ravi]

"... lost 2 consecutive numbers"

?

[Nguyen Anh Cuong]

Meaning:

unique(vec)

ans =

1 2 3 4 7 8 9

I want its ans:

1 2 3 4 5 6 7

because ans mising two values 5 and 6 if using unique. I want replace 7 by 5, 8 by 6, 9 by 7... ect in vec.

Tks.

[KALYAN ACHARJYA]

>> vec=[1 2 3 4 5 6 8 9];
>> a=unique(vec)
a =
     1     2     3     4     5     6     8     9
>> result=a(1):max(a)
result =
     1     2     3     4     5     6     7     8     9

>> result_final=result(1:length(a))
result_final =

     1     2     3     4     5     6     7     8

Are you lokking for this one?

[madhan ravi]

@Kalyan: No, the OP wants no 8

"you can merge the statements in single line"

How?, other than commas / semicolons

[KALYAN ACHARJYA]

sorry I misunderstood @madhan OK.

Answer 1

[Andrei Bobrov]

In your case:

[~,~,vec2] = unique(vec);

[Nguyen Anh Cuong]

Ohhh! Thank you for helping me solve this problem very quickly and simply.

[~,~,vec2] = unique(vec);
vec2=vec2'

Tks