Description
In this question you are required to combine, or concatenate, two years of air pollution data.
Input
2014.csv
2015.csv
Output
output.csv
Sample Input
col1col2
12
col1col2
34
Sample Output
col1col2
12
34
Description
In this question you are required to combine, or concatenate, two years of air pollution data.
Input
2014.csv
2015.csv
Output
output.csv
Sample Input
col1col2
12
col1col2
34
Sample Output
col1col2
12
34
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