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Important  TCS CodeVita Questions Solved – 2015 Problem : Saving for a rainy day By nature, an average Indian believes in saving money. Some reports suggest that an average Indian manages to save approximately 30+% of his salary. Dhaniram is one such hard working fellow. With a view of future expenses, Dhaniram resolves to save a certain amount in order to meet his cash flow demands in the future. Consider the following example. Dhaniram wants to buy a TV. He needs to pay Rs 2000/- per month for 12 installments to own the TV. If let’s say he gets 4% interest per annum on his savings bank account, then Dhaniram will need to deposit a certain amount in the bank today, such that he is able to withdraw Rs 2000/- per month for the next 12 months without requiring any additional deposits throughout. Your task is to find out how much Dhaniram should deposit today so that he gets assured cash flows for a fixed period in the future, given the rate of interest at which his money ...

Important TCS CodeVita Questions Solved – 2015 Problem : Sheldon Cooper and his beverage paradigm Sheldon Cooper, Leonard Hofstadter and Penny decide to go for drinks at Cheese cake factory. Sheldon proposes to make a game out of this. Sheldon proposes as follows, To decide the amount of beverage they plan to consume, say X. Then order for a random number of different drinks, say {A, B, C, D, E, F} of quantities {a, b, c, d, e, f} respectively. If quantity of any three drinks add up to X then we’ll have it else we’ll return the order. E.g. If a + d + f = X then True else False You are given Number of bottles N corresponding to different beverages and hence their sizes Next N lines, contain a positive integer corresponding to the size of the beverage Last line consists of an integer value, denoted by X above Your task is to help find out if there can be any combination of three beverage sizes that can sum up to the quantity they intend to consume. If such a combination...

TCS CodeVita previous years questions – 2014 Problem : Matrix Rotations You are given a square matrix of dimension  N . Let this matrix be called  A . Your task is to rotate  A  in clockwise direction by S  degrees, where  S  is angle of rotation. On the matrix, there will be 3 types of operations viz. Rotation Rotate the matrix A by angle S, presented as input in form of A S Q uerying Query the element at row K and column L, presented as input in form of Q K L U pdation Update the element at row X and column Y with value Z, presented as input in form of U X Y Z Print the output of individual operations as depicted in Output Specification Input Format: Input will consist of three parts, viz. 1. Size of the matrix (N) 2. The matrix itself (A = N * N) 3. Various operations on the matrix, one operation on each line. (Beginning either with A, Q or U) -1 will represent end of input. Note: Angle of rotation will a...

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Problem : Online Communities - Even Groups-2014 In a social network, online communities refer to the group of people with an interest towards the same topic. People connect with each other in a social network. A connection between Person  I  and Person  J  is represented as  C I J . When two persons belonging to different communities connect, the net effect is merger of both communities which I and J belonged to. We are only interested in finding out the communities with the member count being an even number. Your task is to find out those communities. Input Format: Input will consist of three parts, viz. 1. The total number of people on the social network  (N) 2.Queries  C I J , connect I and J Q 0 0 , print the number of communities with even member-count -1 will represent end of input. Output Format: For each query Q, output the number of communities with even member-count Constraints: 1<=N<=10^6 1<=I, J...