| 300 |      1 | 
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| 249 |      2 | 
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| 471 |      3 | def urbanmain() = {
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|  |      4 |   import C3b._
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| 249 |      5 | 
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|  |      6 | 
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| 471 |      7 |   assert(syard(split("3 + 4 * ( 2 - 1 )")) == List("3", "4", "2", "1", "-", "*", "+"))
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|  |      8 |   assert(syard(split("( ( ( 3 ) ) + ( ( 4 + ( 5 ) ) ) )")) == List("3", "4", "5", "+", "+"))
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|  |      9 |   assert(syard(split("5 + 7 / 2")) == List("5", "7", "2", "/", "+"))
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|  |     10 |   assert(syard(split("5 * 7 / 2")) == List("5", "7", "*", "2", "/"))
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|  |     11 |   assert(syard(split("3 + 4 * 8 / ( 5 - 1 ) ^ 2 ^ 3")) == List("3", "4", "8", "*", "5", "1", "-", "2", "3", "^", "^", "/", "+"))
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|  |     12 | 
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|  |     13 |   assert(compute(syard(split("3 + 4 * ( 2 - 1 )"))) == 7)
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|  |     14 |   assert(compute(syard(split("10 + 12 * 33"))) == 406)
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|  |     15 |   assert(compute(syard(split("( 5 + 7 ) * 2"))) == 24)
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|  |     16 |   assert(compute(syard(split("5 + 7 / 2"))) == 8)
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|  |     17 |   assert(compute(syard(split("5 * 7 / 2"))) == 17)
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|  |     18 |   assert(compute(syard(split("9 + 24 / ( 7 - 3 )"))) == 15)
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|  |     19 |   assert(compute(syard(split("4 ^ 3 ^ 2"))) == 262144)
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|  |     20 |   assert(compute(syard(split("4 ^ ( 3 ^ 2 )"))) == 262144)
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|  |     21 |   assert(compute(syard(split("( 4 ^ 3 ) ^ 2"))) == 4096)
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|  |     22 |   assert(compute(syard(split("( 3 + 1 ) ^ 2 ^ 3"))) == 65536)
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|  |     23 | }
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