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given a string,which is filled with either "(" or ")", for example "(())()())", write a function to check if the string is "proper". A "proper" string means if there is a "(" in the string, there should be a ")" which corresponds to the "(" in the string. For example, "))()("
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Software Engineer

Interviewed at Ooyala

3.3★
Dec 17, 2010

given a string,which is filled with either "(" or ")", for example "(())()())", write a function to check if the string is "proper". A "proper" string means if there is a "(" in the string, there should be a ")" which corresponds to the "(" in the string. For example, "))()("

Puzzle ------- Eg: Assume you have 4 strings formed from a,b,c,d like abcd, acdb, adbc, bcda Output should be "bc",3 as "bc" is the largest substring repeated in 3 input strings. Few more examples to understand it. Inp1: {abcd,abcd,abcd,abcd} Out1: abcd,4 Inp2: {abcd,dabc,acbd} Out2: abc,2 Inp3: {abcd,dabc,adbc} Out3: bc,3 All the chars are distinct and all the chars are repeated in each string(You can relax these restrictions if you want). If 4 input strings are given then the output should be like, if you have subString of size 3 present in 3 inputs and subString of size 4 present in 3 inputs but a subString of size 2 present in 4 inputs then you should print the last one as output. But as it is obvious a subString of size 1 will be repeated in all the inputs but you should consider subString od size > 2 and repeated in max of the inputs. To say mathematically, high priority is given to the number of repetitions followed by the size of the subString.
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Senior Software Engineer

Interviewed at Deem

3.6★
Jun 22, 2013

Puzzle ------- Eg: Assume you have 4 strings formed from a,b,c,d like abcd, acdb, adbc, bcda Output should be "bc",3 as "bc" is the largest substring repeated in 3 input strings. Few more examples to understand it. Inp1: {abcd,abcd,abcd,abcd} Out1: abcd,4 Inp2: {abcd,dabc,acbd} Out2: abc,2 Inp3: {abcd,dabc,adbc} Out3: bc,3 All the chars are distinct and all the chars are repeated in each string(You can relax these restrictions if you want). If 4 input strings are given then the output should be like, if you have subString of size 3 present in 3 inputs and subString of size 4 present in 3 inputs but a subString of size 2 present in 4 inputs then you should print the last one as output. But as it is obvious a subString of size 1 will be repeated in all the inputs but you should consider subString od size > 2 and repeated in max of the inputs. To say mathematically, high priority is given to the number of repetitions followed by the size of the subString.

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