Actolap Solutions Java Developer interview questions

In apti round they asked questions based on puzzles like a greesy pole and monkey climbing related and some counting numbers in between given numbers and speed, distance, time question etc, and there are 3 questions of program which has to be written on paper 1. there is a string like "make it happen actolap, solutions make it happen india, actolp make it happen" and o/p will be "make it happen " because it is the longest phrase in this string which comes most of the time in string 2. Pass the palindromic string as a input and return the longest palindrome string for e.g i/p= "abcdcbreee" so the o/p will be "bcdcb" 3. Multiply two integers without using multiply, divide, bitwise operators and also w/o using loops