InfyTQ

1. Given a string, find the substring based on following conditions:

   • The substring must be the longest one of all the possible substring in the given string.
   • There must not be any repeating characters in the substring.
   • If there is more than one substring satisfying the above two conditions, then print the substring which occurs first.
   • Length of the substring must be minimum 3.

   If there is no substring satisfying all the aforementioned conditions then print -1.

   Sample Input1:
   hello
   Sample Output1:
   hel
   Sample Input2:
   heello
   Sample Output2:
   -1
   

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2. Given an expression string expression, write a program to examine whether the pairs and the orders of {, }, (, ), [, ] are correct in expression.

   Sample Input1:
   [()]{}{[()()]()}
   Sample Output1:
   Balanced
   Sample Input2:
   [(])
   Sample Output1:
   Not Balanced
   

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3. Write a C program to print the first half of the list at last and last half of the list at first.
   Input format:
   First-line contains the size of the array.
   The second line contains elements of array separated by space.
   Output Format:
   Modified Array
   Sample Input1:
   5
   1 2 3 4 5
   Sample Output1:
   4 5 3 1 2
   Sample Input2:
   6
   1 4 6 2 3 5
   Sample Output2:
   2 3 5 1 4 6
   

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4. Write a program to remove the given word from the input string. If the substring is not present in the input string, then print the input string.
   Input Format:
   First-line consists of the sentence.
   Second line consists of the words which we want to remove from the given sentence.
   Output Format:
   Sentence after the given word is removed.
   Sample Input1:
   Python is object oriented scripting language.
   object oriented
   Sample Output1:
   Python is scripting language.
   Sample Input2:
   Python is object oriented scripting language.
   programming
   Sample Output2:
   Python is object oriented scripting language.
   

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