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Given the task is to find the maximum number of trailing zeroes in the product of the subsets of size K, of a given array of size N.Let’s now understand what we have to do using an example −Input − Arr[] = {5, 20, 2} , K=2Output − 2Explanation − A total of 3 subsets can be created having size = 2.The product of [5, 20] is 100.The product of [20, 2] is 40.The product of [5, 2] is 10.100 has the maximum number of trailing zeros = 2. Therefore 2 is the answer.Input − Arr[] = {60, 40, 25} ... Read More
Soft references are often used to implement memory-sensitive caches. Let us see an example of soft references in Java −Example Live Demoimport java.lang.ref.SoftReference; class Demo{ public void display_msg(){ System.out.println("Hello there"); } } public class Demo_example{ public static void main(String[] args){ Demo my_instance = new Demo(); my_instance.display_msg(); SoftReference my_softref = new SoftReference(my_instance); my_instance = null; my_instance = my_softref.get(); my_instance.display_msg(); } }OutputHello there Hello thereA class named Demo contains a function named ‘display_msg’, that displays the relevant ... Read More
In this problem, we are given a number n which defines the n-th term of the series 2^0, 2^1, 2^2, …, 2^n. Our task is to create a program to find the sum of the series 2^0 + 2^1 + 2^2 +...+ 2^n.Let’s take an example to understand the problem, Inputn=6Output Explanation sum = 2^0 + 2^1 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 sum = 1 + 2 + 4 + 8 + 16 + 32 + 64 = 127A simple solution to the problem is by using the loop. Finding the 2^i, for each value from 0 ... Read More
Given the task is to find the maximum number of line segments of lengths a, b and c that can be formed from given positive integer N.Let’s now understand what we have to do using an example −Input − N=8, a=3, b=1, c=2Output − 8Explanation − N can be divided into 8 segments of b which is maximum number of segments that can be made.Input − N=13, a=2, b=7, c=3Output − 6Approach used in the below program as followsIn function MaxSegment() declare an array MaxSeg[N +1] of type int and initialize it with value -1.The put the zero-th index equal ... Read More
Given the task is to calculate the maximum number of square or rectangle pieces of equal size that can be obtained by cutting a given square piece in total N number of cuts horizontally or vertically.Let’s now understand what we have to do using an example −Input − N=8Output − 25Explanation − When N=8, the number of vertical cuts = 4 and the number of horizontal cuts = 4.Total pieces = 2512345678910111213141516171819202122232425Input − 7Output − 201234567891011121314151617181920Approach used in the below program as followsIf N is the number of cuts and we have to maximize the resultant pieces then equal number ... Read More
Given the task is to find the maximum number of parallelograms that can be made using given N number of line segments if each line segment can be used at most in one parallelogram.Let’s now understand what we have to do using an example −Input − Arr[] = {8, 3, 1, 3, 8, 7, 1, 3, 5, 3}Output − 2Explanation − With the above given line segments, the two parallelograms that can be formed are with sides 8, 1, 8, 1 and 3, 3, 3, 3 respectively.Input − Arr[] = {7, 9, 9, 7}Output − 1Approach used in the below ... Read More
Given the task is to find the maximum number of ones in a binary matrix possible with the following constraints.Two integers N and X are given where X
Given the task is to calculate the maximum number of groups of size 3 that can be formed when N number of items of type A and M number of items of type B are given.Also, each group should have at least one item of each type, that is either A or B.Let’s now understand what we have to do using an example −Input − N=3, M=5Input − 2ExplanationGroup 1: 1 item of type A and 2 items of type B Group 2: 1 item of type A and 2 items of type B In total, 2 items of type ... Read More
Given the task is to calculate the maximum number of dots that can be expected after throwing a dice N times having M faces.The first face of the dice contains 1 dot, the second face has 2 dots and so on. Likewise the M-th face contains M number of dots.The probability of appearance of each face becomes 1/M.Let’s now understand what we have to do using an example −Input − M=2, N=3Output − 1.875Explanation − The dice has 2 sides = {1, 2}If the dice is thrown 3 times then the sample space will be = MN = 23{(1, 1, ... Read More
Following is an example, wherein we will see unreachable statement using the non-final variable −Exampleclass Demo_example { int a = 2, b = 3; void display_msg(){ while (a < b){ System.out.println("The first variable is greater than the second"); } System.out.println("This is an unreachable statement"); } } public class Demo{ public static void main(String args[]){ Demo_example my_instance = new Demo_example(); my_instance.display_msg(); } }Output“The first variable is greater than the second” displayed infinitelyA class named Demo_example, that defines ... Read More