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Given a matrix in which each row and each column is sorted, write a method to find an element in it.
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Calculate the number of ways of representing n cents
1 
Implement an algorithm to print all valid (e g , properly opened and closed) combinations of npairs of parentheses
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Write a method to compute all permutations of a string
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Write a method to set all bits between i and j in N equal to M
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Stack with min() operation
0 
Given a matrix in which each row and each column is sorted, write a method to find an element in it.
0 
Calculate the number of ways of representing n cents
1 
Implement an algorithm to print all valid (e g , properly opened and closed) combinations of npairs of parentheses
0 
Write a method to compute all permutations of a string
0