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670. Invert a Dictionary
medium
Generalentry
Function contract
Inputs
- d
- dict
Returns
- value
- dict
Examples
Input
{
"d": {
"w": "blue",
"x": "red",
"y": "blue",
"z": "red"
}
}Output
{
"red": [
"x",
"z"
],
"blue": [
"w",
"y"
]
}Input Signature
| Argument | Type |
|---|---|
| d | dict |
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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