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Python Logic to Find All Unique Pairs in an Array

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 Here's the Python logic for finding all unique pairs in an array that sum up to a target value. Python Unique Pair Problem Write a Python function that finds all unique pairs in an array whose sum equals a target value. Avoid duplicates in the result. For example: Input: arr = [2, 4, 3, 5, 7, 8, 9] , target = 9 Output: [(2, 7), (4, 5)] Hints Use a set for tracking seen numbers. Check for complements efficiently. Example def find_unique_pairs(arr, target):     """     Finds all unique pairs in the array that sum up to the target value.     Parameters:     arr (list): The input array of integers.     target (int): The target sum value.     Returns:     list: A list of unique pairs that sum to the target value.     """     seen = set()     pairs = set()     for num in arr:         complement = target - num         if complement in seen:...
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The best helpful hdfs file system commands (1 of 4)

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The best helpful hdfs file system commands
#The best helpful hdfs file system commands:

 cat
hadoop fs -cat FILE [ ... ]
Displays the file content. For reading compressed files, you should use the TEXT command instead.

chgrp
hadoop fs -chgrp [-R] GROUP PATH [ PATH....]

Changes the group association for files and directories. The -R option applies the change recursively.

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