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Expression Add Operators

Medium

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Given a string of digits and target value, return all expressions by adding operators between digits.

Sample Input:

"123", 6

Sample Output:

["1+2+3","1*2*3"]

Hints

Hint 1

Use backtracking to try all operators

Hint 2

Handle multiplication precedence carefully

Hint 3

Track current value and last value for multiplication

Code Editor

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