From aca22b4c73a0600f04047e4b2e8763826e10b580 Mon Sep 17 00:00:00 2001 From: Vlad Date: Thu, 7 May 2026 22:32:55 +0300 Subject: [PATCH 1/5] a --- .../java/practice/CandidateValidator.java | 14 +++++- src/main/java/practice/StreamPractice.java | 47 ++++++++++++++++--- 2 files changed, 53 insertions(+), 8 deletions(-) diff --git a/src/main/java/practice/CandidateValidator.java b/src/main/java/practice/CandidateValidator.java index 8d2e56c0e..11f12cdda 100644 --- a/src/main/java/practice/CandidateValidator.java +++ b/src/main/java/practice/CandidateValidator.java @@ -1,5 +1,15 @@ package practice; -public class CandidateValidator { - //write your code here +import model.Candidate; +import java.util.function.Predicate; + +public class CandidateValidator implements Predicate { + @Override + public boolean test(Candidate candidate) { + return candidate.getAge() >= 35 + && candidate.isAllowedToVote() + && candidate.getNationality().equals("Ukrainian") + && (Integer.parseInt(candidate.getPeriodsInUkr().split("-")[1]) + - Integer.parseInt(candidate.getPeriodsInUkr().split("-")[0])) >= 10; + } } diff --git a/src/main/java/practice/StreamPractice.java b/src/main/java/practice/StreamPractice.java index 57b1ca2e2..64ff01e21 100644 --- a/src/main/java/practice/StreamPractice.java +++ b/src/main/java/practice/StreamPractice.java @@ -1,7 +1,11 @@ package practice; +import java.util.Arrays; import java.util.Collections; import java.util.List; +import java.util.NoSuchElementException; +import java.util.stream.Collectors; +import java.util.stream.IntStream; import model.Candidate; import model.Person; @@ -14,7 +18,15 @@ public class StreamPractice { * "Can't get min value from list: < Here is our input 'numbers' >" */ public int findMinEvenNumber(List numbers) { - return 0; + return numbers.stream() + .map(e -> e.split(",")) + .flatMap(e -> Arrays.stream(e)) + .mapToInt(e -> Integer.parseInt(e)) + .filter(e -> e % 2 == 0) + .min() + .orElseThrow(() -> + new RuntimeException("Can't get min value from list: " + numbers) + ); } /** @@ -23,7 +35,11 @@ public int findMinEvenNumber(List numbers) { * But before that subtract 1 from each element on an odd position (having the odd index). */ public Double getOddNumsAverage(List numbers) { - return 0D; + return IntStream.range(0, numbers.size()) + .map(i -> (i % 2 != 0) ? numbers.get(i) - 1 : numbers.get(i)) + .filter(e -> e % 2 != 0) + .average() + .orElseThrow(() -> new NoSuchElementException()); } /** @@ -35,7 +51,10 @@ public Double getOddNumsAverage(List numbers) { * Example: select men who can be recruited to army (from 18 to 27 years old inclusively). */ public List selectMenByAge(List peopleList, int fromAge, int toAge) { - return Collections.emptyList(); + return peopleList.stream() + .filter(e -> e.getSex().equals(Person.Sex.MAN) + && e.getAge() >= fromAge && e.getAge() <= toAge) + .collect(Collectors.toList()); } /** @@ -50,7 +69,13 @@ public List selectMenByAge(List peopleList, int fromAge, int toA */ public List getWorkablePeople(int fromAge, int femaleToAge, int maleToAge, List peopleList) { - return Collections.emptyList(); + return peopleList.stream() + .filter(e -> + (e.getSex().equals(Person.Sex.MAN) + && e.getAge() >= fromAge && e.getAge() <= maleToAge) + || (e.getSex().equals(Person.Sex.WOMAN) + && e.getAge() >= fromAge && e.getAge() <= femaleToAge)) + .collect(Collectors.toList()); } /** @@ -59,7 +84,11 @@ public List getWorkablePeople(int fromAge, int femaleToAge, * return the names of all cats whose owners are women from `femaleAge` years old inclusively. */ public List getCatsNames(List peopleList, int femaleAge) { - return Collections.emptyList(); + return peopleList.stream() + .filter(e -> e.getSex().equals(Person.Sex.WOMAN) && e.getAge() >= femaleAge) + .flatMap(e -> e.getCats().stream()) + .map(e -> e.getName()) + .collect(Collectors.toList()); } /** @@ -75,6 +104,12 @@ public List getCatsNames(List peopleList, int femaleAge) { * parametrized with Candidate in CandidateValidator. */ public List validateCandidates(List candidates) { - return Collections.emptyList(); + CandidateValidator candidateValidator = new CandidateValidator(); + + return candidates.stream() + .filter(e -> candidateValidator.test(e)) + .map(e -> e.getName()) + .sorted() + .collect(Collectors.toList()); } } From 7cabbc7eea7c338b67a7eb51a7ffbbe42d7d31a0 Mon Sep 17 00:00:00 2001 From: Vlad Date: Thu, 7 May 2026 22:42:11 +0300 Subject: [PATCH 2/5] b --- src/main/java/practice/CandidateValidator.java | 2 +- src/main/java/practice/StreamPractice.java | 1 - 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/src/main/java/practice/CandidateValidator.java b/src/main/java/practice/CandidateValidator.java index 11f12cdda..645addf02 100644 --- a/src/main/java/practice/CandidateValidator.java +++ b/src/main/java/practice/CandidateValidator.java @@ -1,7 +1,7 @@ package practice; -import model.Candidate; import java.util.function.Predicate; +import model.Candidate; public class CandidateValidator implements Predicate { @Override diff --git a/src/main/java/practice/StreamPractice.java b/src/main/java/practice/StreamPractice.java index 64ff01e21..5ea059c67 100644 --- a/src/main/java/practice/StreamPractice.java +++ b/src/main/java/practice/StreamPractice.java @@ -1,7 +1,6 @@ package practice; import java.util.Arrays; -import java.util.Collections; import java.util.List; import java.util.NoSuchElementException; import java.util.stream.Collectors; From 721bf786605bb02ed4f5b594cd244ff078383d87 Mon Sep 17 00:00:00 2001 From: Vlad Date: Thu, 7 May 2026 22:46:37 +0300 Subject: [PATCH 3/5] b --- src/main/java/practice/CandidateValidator.java | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/main/java/practice/CandidateValidator.java b/src/main/java/practice/CandidateValidator.java index 645addf02..d958503c8 100644 --- a/src/main/java/practice/CandidateValidator.java +++ b/src/main/java/practice/CandidateValidator.java @@ -6,7 +6,7 @@ public class CandidateValidator implements Predicate { @Override public boolean test(Candidate candidate) { - return candidate.getAge() >= 35 + return candidate.getAge() >= 3 && candidate.isAllowedToVote() && candidate.getNationality().equals("Ukrainian") && (Integer.parseInt(candidate.getPeriodsInUkr().split("-")[1]) From eb5068dde57bb7388fd4acea3390ecd9484c95c1 Mon Sep 17 00:00:00 2001 From: Vlad Date: Thu, 7 May 2026 22:46:51 +0300 Subject: [PATCH 4/5] b --- src/main/java/practice/CandidateValidator.java | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/main/java/practice/CandidateValidator.java b/src/main/java/practice/CandidateValidator.java index d958503c8..645addf02 100644 --- a/src/main/java/practice/CandidateValidator.java +++ b/src/main/java/practice/CandidateValidator.java @@ -6,7 +6,7 @@ public class CandidateValidator implements Predicate { @Override public boolean test(Candidate candidate) { - return candidate.getAge() >= 3 + return candidate.getAge() >= 35 && candidate.isAllowedToVote() && candidate.getNationality().equals("Ukrainian") && (Integer.parseInt(candidate.getPeriodsInUkr().split("-")[1]) From 07876e967cf2fa5db7d23c533c2d9e51203459c1 Mon Sep 17 00:00:00 2001 From: Vlad Date: Thu, 7 May 2026 23:05:51 +0300 Subject: [PATCH 5/5] aaa --- src/main/java/practice/CandidateValidator.java | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/src/main/java/practice/CandidateValidator.java b/src/main/java/practice/CandidateValidator.java index 645addf02..1e58ffb6c 100644 --- a/src/main/java/practice/CandidateValidator.java +++ b/src/main/java/practice/CandidateValidator.java @@ -4,12 +4,18 @@ import model.Candidate; public class CandidateValidator implements Predicate { + private static final int MIN_AGE = 35; + private static final int MIN_YEARS_IN_UKRAINE = 10; + private static final String REQUIRED_NATIONALITY = "Ukrainian"; + @Override public boolean test(Candidate candidate) { - return candidate.getAge() >= 35 + String[] years = candidate.getPeriodsInUkr().split("-"); + + return candidate.getAge() >= MIN_AGE && candidate.isAllowedToVote() - && candidate.getNationality().equals("Ukrainian") - && (Integer.parseInt(candidate.getPeriodsInUkr().split("-")[1]) - - Integer.parseInt(candidate.getPeriodsInUkr().split("-")[0])) >= 10; + && candidate.getNationality().equals(REQUIRED_NATIONALITY) + && (Integer.parseInt(years[1]) + - Integer.parseInt(years[0])) >= MIN_YEARS_IN_UKRAINE; } }