2017-09-13 LeetCode_241 Different Ways to Add Parentheses
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282. Expression Add Operators
Given a string that contains only digits 0-9
and a target value, return all possibilities to add binary operators (not unary) +
, -
, or *
between the digits so they evaluate to the target value.
Examples:
"123", 6 -> ["1+2+3", "1*2*3"] "232", 8 -> ["2*3+2", "2+3*2"]"105", 5 -> ["1*0+5","10-5"]"00", 0 -> ["0+0", "0-0", "0*0"]"3456237490", 9191 -> []
Credits:
Special thanks to @davidtan1890 for adding this problem and creating all test cases.
Solution:
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