People that cross the bridge must carry the lamp to see the way. Click to expand.Comment hidden because of low score. An interesting puzzle where 4 people must cross a bridge in 17 minutes. A maximum of two persons can cross it at a time. The flashlight can only travel with a person so every time it crosses the bridge it must be carried back. Not all people take the same time to cross the bridge.
Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. Click to expand.Comment hidden because of low score. B takes 2 minutes to cross the bridge. Click to expand.Comment hidden because of low score. Time for each person : 1 mins, 2 mins, 7 mins and 10 mins.
Click to expand.Comment hidden because of low score. They all take different times to cross the bridge, 1, 2, 5, & 10 minutes and must cross in pairs with a torch. Click to expand.Comment hidden because of low score. They all take different times to cross the bridge, 1, 2, 5, & 10 minutes and must cross in pairs with a torch. Four friends A, B, C and D need to cross a bridge. Click to expand.Comment hidden because of low score.
All our interviewers have worked for Microsoft, Google or Amazon, you know you'll get a true-to-life experience.Comment hidden because of low score. Click to expand.Comment hidden because of low score. A pair must walk together at the rate of the slower person: Rachel: - takes 1 minute to cross Tom n John (2min) , let tom return with the light, TimeTaken 3min . A maximum of two persons can cross it at a time. They have only one flashlight and 17 minutes to get there. The optimal solution is to use the fastest person to escort the others. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. A takes 1 minute to cross the bridge. Surround your code with {{{ and }}} to preserve whitespace. This could be exploited. Plus the bridge is only big enough for two people to cross at once.
They all take different times to cross the bridge, 1, 2, 5, & 10 minutes and must cross in pairs with a torch. It depends on the Ti values. Are they just scared away by a simple puzzle? Answer = 17 mins. Everyone has to get across to the other side before that. 25. 4 people need to cross a bridge. back and forth. If it could, would you still want to work there?>Four people need to cross a rickety bridge at night. A pair must walk together at the speed of a slower person. Persons that cross the bridge must carry the lamp to find the way. acknowledge that you have read and understood our People that cross the bridge must carry the lamp to see the way.. A pair must walk together at the speed of slower person… Speeds of. It is night and they have just 1 lamp.
Four people are on one side of the bridge.
He left important portions of problem statements out: it's a nighttime activity, so they need to use the flashlight (only one avaliable), and the bridge can support up to two people (so people can cross the bridge either alone or in pair).In this..for say N people, intially sort the people acc to their time in ascend. It will minimize the time to bring the flashlight back and forth. And, we use fellow engineers as our resume reviewers, so you can be sure that we "get" what you're saying.Our Mock Interviews will be conducted "in character" just like a real interview, and can focus on whatever topics you want. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. Four friends need to cross a bridge. 4 people must cross a bridge in 17 minutes. So.. just walk without bothering to walk back to take the torch back. So let’s put all this together.Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.Please write to us at contribute@geeksforgeeks.org to report any issue with the above content. \n2nd. If they cross together, then we need one of them to come back to get the others. Bridge Crossing Riddle: 4 People and 1 Flashlight.
C takes 5 minutes to cross the bridge. That would make this question too simple even as a warm up question.Let’s brainstorm a little further.
If crossing time is less than 1 min , then 17 min is the minimum.From my perspective the main point is that they have to move in pairs, in order to cross the bridge, so first pair C & D (10 min), then after them A & B (2 min) will cross.