# Question is not defined clearly

• In the example:

"232", 8 -> ["23+2", "2+32"]

So, should this be a collection or permutation?

"232", 8 -> ["23+2", "2+32", "32+2", 2+23]

• Permutations may be involved in it
But solution of this is
"232",8--> 23+2 , 2+32

• May I know why the solution does not contain 32+2 and 2+23?

• None of your expressions are correct, for example 23+2 is 25, not 8.

Also, you're only allowed to "add operators between the digits", so clearly 32+2 is wrong because you did something else as well.

• That is 2 times 3 plus 2 not 23 plus 2. Not sure why "*" can not show.

• Because it's markdown... put for spaces in front of your examples so it's readable.

• return all possibilities to add binary operators [...] between the digits

it doesn't say anything about reordering the digits. Btw, it's really easy to test this kind of assumption: use a custom testcase; it returns `["2*3+2","2+3*2"]`.

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