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# NumPy | join method

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Char
schedule Mar 10, 2022
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Numpy's `join(~)` method returns a Numpy array of strings where a string in the first array is inserted between every two adjacent characters of a string the second array. Check the examples for clarification.

# Parameters

1. `sep` | `array-like`

A string used to separate `seq`.

2. `seq` | `array-like`

A sequence of strings that are to be separated.

# Return value

A Numpy array of strings.

# Examples

To separate `"abfee"` using `"*"` and `"cd"` using `"**"`:

``` np.char.join(["*", "**"], ["abfee", "cd"]) array(['a*b*f*e*e', 'c**d'], dtype='<U9') ```

If the `seq` strings are less than two characters, the original string is returned:

``` np.char.join(["*", "**"], ["", "c"]) array(['', 'c'], dtype='<U1') ```
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