Introduction to Java Programming and Data Structures: Brief Version (11th Global Edition)
11th Edition
ISBN: 9780134671710
Author: Y. Daniel Liang
Publisher: PEARSON
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Expert Solution & Answer
Chapter 30.2, Problem 30.2.4CP
Explanation of Solution
Expression of “map” type for given scenario:
map.entrySet().stream().mapToDouble(e->e.getValue()).sum()
Explanation:
The “entrySet()” was retrieved all elements in map and add all the double values using aggregate method “sum()”. It fetch the double values using the method “mapToDouble()”.
Program:
//Import necessary package
import java.util.stream.Stream;
import java.util...
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Students have asked these similar questions
For any element in keysList with a value greater than 100, print the corresponding value in itemsList, followed by a space. Ex: If keysList = {42, 105, 101, 100} and itemsList = {10, 20, 30, 40}, print: 20 30
Since keysList.at(1) and keysList.at(2) have values greater than 100, the value of itemsList.at(1) and itemsList.at(2) are printed.
#include <iostream>#include <vector>using namespace std;
int main() {const int SIZE_LIST = 4;vector<int> keysList(SIZE_LIST);vector<int> itemsList(SIZE_LIST);unsigned int i;
for (i = 0; i < keysList.size(); ++i) {cin >> keysList.at(i);}
for (i = 0; i < itemsList.size(); ++i) {cin >> itemsList.at(i);}
/* Your solution goes here */
cout << endl;
return 0;}
Please help me with this problem using c++.
Practice / Frequency of Characters
Write a method that returns the frequency of each characters of a given String parameter.
If the given String is null, then return null
If the given String is empty return an empty map
Example
input:
output: empty map
explanation: input is empty
Example
input: null
output: null
explanation: input is null.
Since problem output is focused on the frequency we can
comfortably use Map data structure. Because we can use
characters as key and the occurrences of them as value.
Example
input: responsible
output: {r=1, e=2, s=2, p=1,
o=1, n=1, i=1, b=1, l=1}
explanation: characters are
keys and oc
values
ences are
Q8 Hive Minds: Migrating Birds
You again control a single insect, but there are B birds flying along known paths. Specifically, at
time t each bird b will be at position (x¿(t), Yb(t)). The tuple of bird positions repeats with
period T. Birds might move up to 3 squares per time step. An example is shown below, but
keep in mind that you should answer for a general instance of the problem, not simply the map
and path shown below.
Your insect can share squares with birds and it can even hitch a ride on them!
On any time step that your insect shares a square with a bird, the insect may
either move as normal or move directly to the bird's next location (either
action has cost 1, even if the bird travels farther than one square).
Chapter 30 Solutions
Introduction to Java Programming and Data Structures: Brief Version (11th Global Edition)
Ch. 30.1 - Prob. 30.1.1CPCh. 30.2 - Prob. 30.2.1CPCh. 30.2 - Prob. 30.2.2CPCh. 30.2 - Prob. 30.2.3CPCh. 30.2 - Prob. 30.2.4CPCh. 30.3 - Prob. 30.3.1CPCh. 30.3 - Prob. 30.3.2CPCh. 30.3 - Prob. 30.3.3CPCh. 30.3 - Prob. 30.3.4CPCh. 30.3 - Given an array names in Listing 30.1, write the...
Ch. 30.4 - Prob. 30.4.1CPCh. 30.4 - How do you create a parallel stream?Ch. 30.4 - Prob. 30.4.3CPCh. 30.4 - Prob. 30.4.4CPCh. 30.4 - Prob. 30.4.5CPCh. 30.4 - Write a statement to obtain an array of 1000...Ch. 30.5 - Prob. 30.5.1CPCh. 30.5 - Prob. 30.5.2CPCh. 30.5 - Prob. 30.5.3CPCh. 30.5 - Prob. 30.5.4CPCh. 30.6 - Prob. 30.6.1CPCh. 30.7 - Prob. 30.7.1CPCh. 30.8 - Can the following code be used to replace line 19...Ch. 30.8 - Prob. 30.8.2CPCh. 30.8 - Prob. 30.8.3CPCh. 30.8 - Prob. 30.8.4CPCh. 30.8 - Write the code to obtain a one-dimensional array...Ch. 30 - Prob. 30.1PECh. 30 - Prob. 30.2PECh. 30 - Prob. 30.3PECh. 30 - (Print distinct numbers) Rewrite Programming...Ch. 30 - Prob. 30.5PECh. 30 - Prob. 30.6PECh. 30 - Prob. 30.7PECh. 30 - Prob. 30.8PECh. 30 - Prob. 30.9PECh. 30 - Prob. 30.10PECh. 30 - Prob. 30.11PECh. 30 - (Sum the digits in an integer) Rewrite Programming...Ch. 30 - (Count the letters in a string) Rewrite...Ch. 30 - Prob. 30.14PECh. 30 - (Display words in ascending alphabetical order)...Ch. 30 - Prob. 30.16PECh. 30 - Prob. 30.17PECh. 30 - (Count the occurrences of words in a text file)...Ch. 30 - (Summary information) Suppose the file test.txt...
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