Water cans puzzle

-
Water cans puzzle is very common puzzle asked in interviews.somewhere or the other you must have encountered with this type of puzzles.

Puzzle :

 Sam is on a treasure hunt and on his way to find out the treasure he reached at river where he encountered with the next clue which will further show him the path towards the treasure.Now for the next clue he saw two cans,one is of 9 gallon and another is of 4 gallon both are empty initially and a balance with a note on it "Exactly six gallons of water will show you the way".Now Sam has to measure exactly six gallons of water to get the map for further search.Assume that Sam can transfer water from one can to another and also throw water if it is required.How will he measure exactly 6 gallons of water?

Solution :

 Obviously you cannot measure 6 gallons of water in a 4 gallon can.So you have to take 6 gallons of water in a 9 gallon can and keep it on balance.

Here are the steps sam will follow :-

1) Sam will first pour water in 9 gallon can completely from the river.
2) Now he will transfer 4 gallons of water in 4 gallon can leaving the 9 gallon can with 5 gallons water.
3) He will now empty the 4 gallon can by throwing water from it.
4) Again he will transfer 4 gallon of water from 9 gallon can leaving 1 gallon of water in 9 gallon can.
5) He will now again empty 4 gallon can and transfer remaining 1 gallon of water into 4 gallon can leaving 9 gallon can empty.
6) Now he will again fill the 9 gallon can completely with water from the river.
7) Finally he will pour rest 3 gallon of water in 4 gallon water making it completely filled and leaving 6 gallon of water in 9 gallon can and put it on a balance to get the map.

PS - Remember water can puzzle from the movie Die-Hard 3 :-)

Comments

Post a Comment

Popular posts from this blog

Tricky Questions or Puzzles in C

-
This post is about the Tricky Questions   or code snippet in C or C++ asked in most of the Interviews   (See Interview Experience ) by some of the good companies. You may know probably the right concept but it will not strike you at the interview and to crack all those Interview Questions  you should know some of them beforehand. If you are applying for Job related to JAVA then checkout the blog post  Tricky Questions in JAVA . 1) what will be the output of the following Printf function.   printf("%d",printf("%d",printf("%d",printf("%s","ILOVECPROGRAM")))); Ans-ILOVECPROGRAM1321 The above printf line gives output like this because printf returns the number of character successfully written in the output. So the inner printf("%s","ILOVECPROGRAM") writes 13 characters to the output so the outer printf function will print 13 and as 13 is of 2 characters so the next outer printf function will print 2 and then
Read more

Program to uncompress a string ie a2b3c4 to aabbbcccc

-
Below is the program to uncompress a string #include<stdio.h> #include<conio.h> #include<stdlib.h> int main() { char str[100]="a2b3c4d8u7"; for(int i=0;str[i]!='\0';i++) { if(i%2!=0) { for(int j=0;j<atoi(&str[i]);j++) { printf("%c",str[i-1]); } } } getch(); } Want to become a Data Engineer? Check out below blog posts  1.  5 Key Skills Every Data Engineer needs in 2023 2.  How to prepare for Data Engineering Interviews 3.  Top 25 Data Engineer Questions
Read more

Programs and Puzzles in technical interviews i faced

-
Image
I have attended interview of nearly 10 companies in my campus placements and sharing their experiences with you,though i did not got selected in any of the companies but i had great experience facing their interviews and it might help you as well in preparation of interviews.Here are some of the puzzles and programs asked to me in interview in some of the good companies. CHECK-OUT the VIDEO of  Technical Interview for SAP Labs, CA Tech & HP R&D 1) SAP Labs I attended sap lab online test in my college through campus placements.It had 3 sections,the first one is usual aptitude questions which i would say were little tricky to solve.The second section was Programming test in which you were provided snippet of code and you have to complete the code (See Tricky Code Snippets  ).The code are from different data structures like Binary Tree, AVL Tree etc.Then the third section had questions from Database,OS and Networks.After 2-3 hours we got the result and i was shortlisted
Read more