From c9d90b060df3e81c39d53057e0bf5b1e4c51d3b6 Mon Sep 17 00:00:00 2001
From: Karol Gajda <karolgaj97@interia.pl>
Date: Thu, 5 Dec 2024 13:01:48 +0100
Subject: [PATCH] Changing loops into streamAPI in formatDataValidators

---
 src/main/java/practice/CandidateValidator.java | 16 ++++++++++++----
 src/main/java/practice/StreamPractice.java     | 13 +++++++------
 2 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/src/main/java/practice/CandidateValidator.java b/src/main/java/practice/CandidateValidator.java
index ad64f0716..856c1372a 100644
--- a/src/main/java/practice/CandidateValidator.java
+++ b/src/main/java/practice/CandidateValidator.java
@@ -1,6 +1,10 @@
 package practice;
 
+import java.util.Arrays;
 import java.util.function.Predicate;
+import java.util.stream.IntStream;
+import java.util.stream.Stream;
+
 import model.Candidate;
 
 public class CandidateValidator implements Predicate<Candidate> {
@@ -15,10 +19,14 @@ public boolean test(Candidate candidate) {
     }
 
     private void periodsInUkrValidator(Candidate candidate) {
-        for (int i = 0; i < candidate.getPeriodsInUkr().length(); i++) {
-            if (Character.isLetter(candidate.getPeriodsInUkr().charAt(i))) {
-                throw new RuntimeException("Data contains letters");
-            }
+
+        if (Stream.of(candidate.getPeriodsInUkr())
+                .map(String::chars)
+                .flatMap(IntStream::boxed)
+                .mapToInt(i -> i)
+                .mapToObj(i -> (char) i)
+                .anyMatch(Character::isLetter)) {
+            throw new RuntimeException("Wrong Data format");
         }
     }
     //write your code here
diff --git a/src/main/java/practice/StreamPractice.java b/src/main/java/practice/StreamPractice.java
index 807eaf490..d9f33f3c8 100644
--- a/src/main/java/practice/StreamPractice.java
+++ b/src/main/java/practice/StreamPractice.java
@@ -111,13 +111,14 @@ public List<String> validateCandidates(List<Candidate> candidates) {
     }
 
     private void dataValidatorForFindMinEvenNumber(List<String> data) {
-        for (String datas : data) {
-            for (int i = 0; i < datas.length(); i++) {
-                if (Character.isLetter(datas.charAt(i))) {
-                    throw new RuntimeException("Data contains letters");
 
-                }
-            }
+        if (data.stream()
+                .map(String::chars)
+                .flatMap(IntStream::boxed)
+                .mapToInt(i -> i)
+                .mapToObj(i -> (char) i)
+                .anyMatch(Character::isLetter)) {
+            throw new RuntimeException("Wrong Data format");
         }
     }
 }