XML to JSON Sergey Svistunov

Convert 1,000,000 person records from XML to JSON as fast as possible.

Input

XML document on STDIN:

<?xml version="1.0" encoding="UTF-8"?>
<persons>
    <person id="1512376">
        <age>30</age>
        <height>169.1</height>
        <married>true</married>
        <phone code="+6"><number>1283603279</number></phone>
        <phone code="+6"><number>1659964668</number></phone>
    </person>
    ...
</persons>

Output

One JSON object per person to STDOUT, preserving order:

{
    "id": 1512376,
    "age": 30,
    "height": 169.1,
    "married": true,
    "phones": [
        {
            "code": "+6",
            "number": 1283603279
        },
        {
            "code": "+6",
            "number": 1659964668
        }
    ]
}

Constraints

  • Preserve the order of persons
  • Omit the phones field if the phone array is empty
  • Maximum number of phones per person is 3
Restrictions:60s512Mb 1 Score Packages
Back to listApr 20, 2026 15:00BenBenError
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Run Statistics
#DateScoreWall TimeCPU UserCPU SystemMemoryError
1Apr 20, 2026 15:000414,299,120356,673,00034,967,00094,523,392diff:   map[string]any{ +  "age": s"0",    "height": s"177.1",    "id": s"846461",    "married": bool(true),   }
2Apr 20, 2026 15:000417,372,349361,324,00029,944,00094,773,248diff:   map[string]any{ +  "age": s"0",    "height": s"156.5",    "id": s"522319",    "married": bool(true),   }
3Apr 20, 2026 15:000420,596,976343,657,00047,952,00094,773,248diff:   map[string]any{ +  "age": s"0",    "height": s"193.8",    "id": s"392299",    ... // 2 identical entries   }