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686. Group By Key
medium
Generalentry
Function contract
Inputs
- pairs
- list
Returns
- value
- dict
Examples
Input
{
"pairs": [
[
"a",
1
],
[
"b",
2
],
[
"a",
3
]
]
}Output
{
"a": [
1,
3
],
"b": [
2
]
}Input Signature
| Argument | Type |
|---|---|
| pairs | list |
Output Signature
| Return Name | Type |
|---|---|
| value | dict |
Constraints
Hint 1
Hint 2
Hint 3
Roles
Software Engineer
ML Engineer
Data Engineer
Quantitative Researcher
Research Scientist
Companies
GeneralLevels
entry
Tags
python
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