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Rajeev Kumar
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Count the number of possible triangles


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Excel Sheet Row Numbers
Given the sequence  S1  = {a,b,c,d,…,x,y,z,aa,ab,ac…. } and given that this sequence corresponds (term for term) to the sequence  S2  = {0,1,2,3,….}. Write code to convert an element of  S2  to the corresponding element of  S1 . Equation (1) n = 26 + 26 2 +...

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Counting Boolean Parenthesizations: You are given a boolean expression consisting of a string of the symbols 'true', 'false', 'and', 'or', and 'xor'. Count the number of ways to parenthesize the expression such that it will evaluate to true. For example, th...

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Balanced Partition
Balanced Partition: You have a set of n integers each in the range 0 ... K. Partition these integers into two subsets such that you minimize |S1 - S2|, where S1 and S2 denote the sums of the elements in each of the two subsets.

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Knapsack problem
Integer Knapsack Problem (Duplicate Items Forbidden): This is the same problem as the example above, except here it is forbidden to use more than one instance of each type of item.

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Building Bridges
Building Bridges : Consider a 2-D map with a horizontal river passing through its center. There are n cities on the southern bank with x-coordinates a(1) ... a(n) and n cities on the northern bank with x-coordinates b(1) ... b(n). You want to connect as man...

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