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Articles by Arnab Chakraborty
Page 315 of 377
C++ Program to Round a Number to n Decimal Places
Representing numbers in outputs is an interesting and also important task while we are writing programs in any language. For integer type (short, long, or medium) type data, it is easy to express the numbers as output. For floating point numbers (float or double type), sometimes we need to round them off to certain decimal places. For example, if we want to represent 52.24568 up to three decimal places, some pre-processing needs to be done. In this article, we shall cover a few techniques to represent a floating-point number up to a certain decimal placed by rounding it off. Among ...
Read MoreC++ Program to Calculate simple interest and compound interest
After calculating interest on the principal amount, simple interest is calculated by taking the principal amount, the rate of interest, and the number of years it will take to calculate interest. The formula is quite easy to understand. The power law is used to calculate compound interest by taking into account the principal amount, the rate of interest, and the period. Here, the formula is likewise not difficult. In this article, we'll talk about how to calculate simple and compound interest values and then use the C++ programming language to put this logic into practice. Simple Interest Simple interest is ...
Read MoreC++ Program to get minimum difference between jigsaw puzzle pieces
Suppose we have an array A with m elements and another number n. Amal decided given a present for his n friend, so he will give each of them a jigsaw puzzle. The shop assistant told him that there are m puzzles in the shop, but they might differ in difficulty and size. Specifically, the ith jigsaw puzzle consists of A[i] pieces. So Amal decided that the difference between the numbers of pieces in his presents must be as small as possible. Let x be the number of pieces in the largest puzzle that he buys and y be the ...
Read MoreC++ Program to get blocks position after right side rotation
Suppose we have an array A with n elements. A[i] represents there are A[i] number of blocks stacked on top of each other at ith column. The entire blocks are inside a closed transparent boundary box. Now if we rotate the entire big box clockwise 90°, then due to change of gravity direction, the blocks will fall, after than reverse it to its previous orientation. Then find the new array like A after these operations.Problem CategoryThis problem falls under sorting problems. Sorting is a very common problem while we are talking about different problem solving algorithms in computer science. As ...
Read MoreC++ Program to find length of maximum non-decreasing subsegment
Suppose we have an array A with n elements. Amal has decided to make some money doing business on the Internet for exactly n days. On the i-th day he makes A[i] amount of money. Amal loves progress, that's why he wants to know the length of the maximum non-decreasing subsegment in sequence A[i]. The subsegment of the sequence is its continuous fragment. A subsegment of numbers is called non-decreasing if all numbers in it follow in the nondecreasing order.Problem CategoryAn array in the data structure is a finite collection of elements of a specific type. Arrays are used to ...
Read MoreC++ Program to get number at position k after positioning n natural numbers
Suppose we have two numbers n and k. We are determined to rearrange natural numbers. But there are too many natural numbers, so we have decided to start with the first n. Pick the following sequence of numbers: firstly, all odd integers from 1 to n (in ascending order), then all even integers from 1 to n (also in ascending order). We have to find which number will stand at the position number k.Problem CategoryVarious problems in programming can be solved through different techniques. To solve a problem, we have to devise an algorithm first, and to do that we ...
Read MoreC++ Program to check joke programming code is generating output or not
Suppose we have a string S with n characters. In a joke programming language, there are only 4 instructions."H" to print "Hello World""Q" to print its source code"9" to print "99 bottles of juice""+" to increment the value stored in accumulatorInstructions "H" and "Q" are case-sensitive and they must be in uppercase. The characters except these four are ignored. We have a program written in this language. You have to check whether executing this program will produce any output or not.Problem CategoryVarious problems in programming can be solved through different techniques. To solve a problem, we have to devise an ...
Read MoreC++ Program to check player position is dangerous or not in football match
Suppose we have a binary string S of size n. Amal loves football very much. One day, he was watching a match, he was writing the players' current positions on a piece of paper. The given string is the written position. A zero corresponds to players of one team; a one corresponds to players of another team. If there are at least 7 players of some team standing one after another, then the situation is marked as "dangerous". We have to check whether it is dangerous or not.Problem CategoryTo solve this problem, we need to manipulate strings. Strings in a ...
Read MoreC++ Program to check April fool news is fake or real
Suppose we have a string S with n characters. As it's the first of April, Amal is suspecting that the news she reads today are fake, and he does not want to look silly in front of all the contestants. He knows that a news is fake if it contains "fool" as a subsequence. We have to check whether the news is really fake or not.Problem CategoryTo solve this problem, we need to manipulate strings. Strings in a programming language are a stream of characters that are stored in a particular array-like data type. Several languages specify strings as a ...
Read MoreC++ Program to get minimum perimeter of rectangle whose area is n
Suppose we have a number n. We are developing a project to build a new data center. The plot of this data center will be a rectangle with an area of exactly n square meters. Each side of the data center must be an integer. We want to minimize the impact of the external environment on the data center. For this reason, we want to minimize the length of the perimeter of the data center (that is, the sum of the lengths of its four sides). We have to find the minimum perimeter of a rectangular data center with an ...
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