Transform the ExpressionProblem code: ONP |
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Reverse Polish Notation (RPN) is a mathematical notation where every operator follows all of its operands. For instance, to add three and four, one would write "3 4 +" rather than "3 + 4". If there are multiple operations, the operator is given immediately after its second operand; so the expression written "3 − 4 + 5" would be written "3 4 − 5 +" first subtract 4 from 3, then add 5 to that.
Transform the algebraic expression with brackets into RPN form.
You can assume that for the test cases below only single letters will be used, brackets [] will not be used and each expression has only one RPN form (no expressions like a*b*c)
Input
The first line contains t, the number of test cases (less then 100).
Followed by t lines, containing an expression to be translated to RPN form, where the length of the expression is less then 400.
Output
The expressions in RPN form, one per line.
Example
Input: 3 (a+(b*c)) ((a+b)*(z+x)) ((a+t)*((b+(a+c))^(c+d))) Output: abc*+ ab+zx+* at+bac++cd+^*
| Date: | 2008-12-01 |
| Time limit: | 5s |
| Source limit: | 50000B |
| Languages: | All except: TCL PERL6 CLOJ GO F# |
| Resource: | - |
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Program should read from standard input and write to standard output.
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