lottery 6 out of 46

Hello i need to simulate specific number of games of lottery 6 out of 45 and compare if i get 1s 2s...6s and compare my winrate. I am not allowed to use functions designed specifically for matlab though.

How would i count my similarities between "tipps" and "lottozahl"? counts doesnt seem to work

clc
lottospiele = input ('´Wie oft wollen Sie Lotto spielen?');

while lottospiele > 0
    if lottospiele > 0
        tipps = randperm (45,6);    
        lottozahl = randperm(45,6);
        disp (lottozahl)
        disp(tipps)
        counts=histc(tipps, 46:6)
        lottospiele = lottospiele - 1;
    end
end

[Rik]

What are you trying to do? It sounds like ismember will do what you need.

What functions are you not allowed to use?

[John D'Errico]

If you cannot use functions "designed" for MATLAB, then you cannot even add two numbers together. Don't believe me? The addition operator + is actually a MATLAB function: plus. Other tools, like the > operator, is found in the form of the MATLAB function gt.

So you clearly need to write your own low level tools to add, subtract, multiply, divide numbers. Other tools to test for inequality.

You certainly cannot use tools like randperm - a MATLAB function! Or, histc, another MATLAB function. These are fairly high level tools.

So how do we know that tools you can use? If you can use randperm or histc, then why cannot you use other tools? And where is the list of what you cannot use? Most importantly, why cannot you use ismember, if you can use those other tools?

[Raz134]

The following functions/operators (input functions are all allowed) are allowed to be used:

- Arithmetic basic functions (+ - - :)

- Assignment (=)

- Comparison operators (< ≤ == ≥ >)

- Increment, decrement operators, bit operations

- min, max, sum, length of vectors

- modulo

- round (floor, ceil, round), abs

- Random function: 0-1 equally distributed, 1-n integer

- Trigonometric functions (sin, cos, tan)

- Constants (pi)

- Logic Operators

- Root

- Faculty

- logarithm

So i thought i can use "randperm" because its a random function. Im fairly limited and it makes stuff really hard. This makes it very hard to comeup with solutions to my problems

So im trying to simulate 6 out of 46 lottery and compare it to random tipps generated and compare my results of 1s 2s 3s... with theoretical results. Not sure how I am able to count these though with my limited options.

[Rik]

I would suggest a loop. Once you have generated the winning number and your choice you need to loop through either of them to count the number of elements that are shared.

Answer 1

[Image Analyst]

This might be instructive. Adapt as needed:

official = [1,3,32,19,4,21]
myPick = [2,4,19,25,32,40]
% Find the mismatches which are in the official but not in myPick
mismatches = setdiff(official, myPick)
% Find the mismatches which are in myPick but not in the official
mismatches = setdiff(myPick, official)
% Find out which numbers are in both myPick and in the official
[ia, ib] = ismember(myPick, official)
myMatches = myPick(ia)

You'll see:

official =

1 3 32 19 4 21

myPick =

2 4 19 25 32 40

mismatches =

1 3 21

mismatches =

2 25 40

ia =

1×6 logical array

0 1 1 0 1 0

ib =

0 5 4 0 3 0

myMatches =

4 19 32