From 254860225e8dfd27b024c2737363ade10da7dcdf Mon Sep 17 00:00:00 2001
From: Ezra Nyabuti <enyabuti251@gmail.com>
Date: Sun, 30 Mar 2025 23:19:08 +0000
Subject: [PATCH 1/4] feat: implements methods for array concatenation and word
 search in Lesson11 class

---
 .../codedifferently/lesson11/Lesson11.class    | Bin 0 -> 570 bytes
 .../com/codedifferently/lesson11/Lesson11.java |  17 +++++++++++++++--
 2 files changed, 15 insertions(+), 2 deletions(-)
 create mode 100644 lesson_11/arrays_java/arrays_app/src/main/java/com/codedifferently/lesson11/Lesson11.class

diff --git a/lesson_11/arrays_java/arrays_app/src/main/java/com/codedifferently/lesson11/Lesson11.class b/lesson_11/arrays_java/arrays_app/src/main/java/com/codedifferently/lesson11/Lesson11.class
new file mode 100644
index 0000000000000000000000000000000000000000..f886cf7ed92f0b4ea81284b9f0709ea3f95f034f
GIT binary patch
literal 570
zcma)2%}N6?7@X|3uC3PAU!+h$P-(4n>A6ynf>5Y>sOX^=)7^AUU9+-H1@AtI7q5B}
zMEU?eiO(ST^Q9_!G=a%v@@3{rp5Grw0CupHh6UR}Vj4+IFy#9DlDi>SfqT&H3r{ml
zY)d6|oxv`ajvP!ftb5V9>qWlsWv?e<p>%lVhGH;?RJH21z6nF3K{X87mQ-SYc-|H9
zA@7Ey<N~1^k@C0}ifb7uN-1`lrB0I})7IQO+v6AGS_fGM%jokxsr=(8_6KxRbLvS2
z3>(Ex>$l~$j!CUGN?+Pg%g}Affvz#6+A^T5VNCJ0e_h)CW873)1R}20$tm5AhOsAh
zrFlu_=d~5n1y<qEf0|)~nI9!g(XK!%qcyqt0CrD=YzWOUiG)*_CN!l!5;TF0@+f)w
zl-{%Jh4SbI%UgwVp>jYtIx*zhX15<NTX$4xjlJ^Z26AzbK^8MuBwQiBhFL;$V!a{d
hV1~USPgyzAt#P8+*~W(%x4)g`F=uqlle#cwi=U`7dPe{N

literal 0
HcmV?d00001

diff --git a/lesson_11/arrays_java/arrays_app/src/main/java/com/codedifferently/lesson11/Lesson11.java b/lesson_11/arrays_java/arrays_app/src/main/java/com/codedifferently/lesson11/Lesson11.java
index 248938a96..bd974b314 100644
--- a/lesson_11/arrays_java/arrays_app/src/main/java/com/codedifferently/lesson11/Lesson11.java
+++ b/lesson_11/arrays_java/arrays_app/src/main/java/com/codedifferently/lesson11/Lesson11.java
@@ -1,5 +1,6 @@
 package com.codedifferently.lesson11;
 
+import java.util.ArrayList;
 import java.util.List;
 
 public class Lesson11 {
@@ -9,7 +10,12 @@ public class Lesson11 {
    * https://leetcode.com/problems/concatenation-of-array
    */
   public int[] getConcatenation(int[] nums) {
-    return null;
+    int answer[] = new int[nums.length * 2];
+    for (int i = 0; i < nums.length; i++) {
+      answer[i] = nums[i];
+      answer[i + nums.length] = nums[i];
+    }
+    return answer;
   }
 
   /**
@@ -17,6 +23,13 @@ public int[] getConcatenation(int[] nums) {
    * https://leetcode.com/problems/find-words-containing-character/
    */
   public List<Integer> findWordsContaining(String[] words, char x) {
-    return null;
+    List<Integer> result = new ArrayList<>();
+    for (int i = 0; i < words.length; i++) {
+      if (words[i].indexOf(x) != -1) {
+        result.add(i);
+      }
+    }
+
+    return result;
   }
 }

From a6ce0c9c76214875e6c91a13289173e76621ea15 Mon Sep 17 00:00:00 2001
From: Ezra Nyabuti <enyabuti251@gmail.com>
Date: Mon, 31 Mar 2025 14:30:59 +0000
Subject: [PATCH 2/4] refactor: use var for result declaration

---
 .../src/main/java/com/codedifferently/lesson11/Lesson11.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lesson_11/arrays_java/arrays_app/src/main/java/com/codedifferently/lesson11/Lesson11.java b/lesson_11/arrays_java/arrays_app/src/main/java/com/codedifferently/lesson11/Lesson11.java
index bd974b314..b45a48448 100644
--- a/lesson_11/arrays_java/arrays_app/src/main/java/com/codedifferently/lesson11/Lesson11.java
+++ b/lesson_11/arrays_java/arrays_app/src/main/java/com/codedifferently/lesson11/Lesson11.java
@@ -23,7 +23,7 @@ public int[] getConcatenation(int[] nums) {
    * https://leetcode.com/problems/find-words-containing-character/
    */
   public List<Integer> findWordsContaining(String[] words, char x) {
-    List<Integer> result = new ArrayList<>();
+    var result = new ArrayList<Integer>();
     for (int i = 0; i < words.length; i++) {
       if (words[i].indexOf(x) != -1) {
         result.add(i);

From 3458800e2843fc8588799bac27a10d25bf1f79fa Mon Sep 17 00:00:00 2001
From: Ezra Nyabuti <enyabuti251@gmail.com>
Date: Mon, 31 Mar 2025 14:32:31 +0000
Subject: [PATCH 3/4] feat: implement getConcatenation and findWordsContaining
 functions

---
 lesson_11/arrays_ts/src/lesson11.ts | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/lesson_11/arrays_ts/src/lesson11.ts b/lesson_11/arrays_ts/src/lesson11.ts
index 54af1ba03..c50ac5d39 100644
--- a/lesson_11/arrays_ts/src/lesson11.ts
+++ b/lesson_11/arrays_ts/src/lesson11.ts
@@ -3,7 +3,12 @@
  * https://leetcode.com/problems/concatenation-of-array
  */
 export function getConcatenation(nums: number[]): number[] {
-  return [];
+  if (nums.length === 0) return [];
+  const result = [...nums];
+  for (const num of nums) {
+    result.push(num);
+  }
+  return result;
 }
 
 /**
@@ -11,5 +16,12 @@ export function getConcatenation(nums: number[]): number[] {
  * https://leetcode.com/problems/find-words-containing-character/
  */
 export function findWordsContaining(words: string[], x: string): number[] {
-  return [];
+  if (words.length === 0) return [];
+  const result = [];
+  for (let i = 0; i < words.length; i++) {
+    if (words[i].includes(x)) {
+      result.push(i);
+    }
+  }
+  return result;
 }

From 444214ddf993224a1e74a124148cc3ef54bbfef4 Mon Sep 17 00:00:00 2001
From: Ezra Nyabuti <enyabuti251@gmail.com>
Date: Thu, 3 Apr 2025 01:48:30 +0000
Subject: [PATCH 4/4] chore: remove Lesson11.class file

---
 .../com/codedifferently/lesson11/Lesson11.class   | Bin 570 -> 0 bytes
 1 file changed, 0 insertions(+), 0 deletions(-)
 delete mode 100644 lesson_11/arrays_java/arrays_app/src/main/java/com/codedifferently/lesson11/Lesson11.class

diff --git a/lesson_11/arrays_java/arrays_app/src/main/java/com/codedifferently/lesson11/Lesson11.class b/lesson_11/arrays_java/arrays_app/src/main/java/com/codedifferently/lesson11/Lesson11.class
deleted file mode 100644
index f886cf7ed92f0b4ea81284b9f0709ea3f95f034f..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 570
zcma)2%}N6?7@X|3uC3PAU!+h$P-(4n>A6ynf>5Y>sOX^=)7^AUU9+-H1@AtI7q5B}
zMEU?eiO(ST^Q9_!G=a%v@@3{rp5Grw0CupHh6UR}Vj4+IFy#9DlDi>SfqT&H3r{ml
zY)d6|oxv`ajvP!ftb5V9>qWlsWv?e<p>%lVhGH;?RJH21z6nF3K{X87mQ-SYc-|H9
zA@7Ey<N~1^k@C0}ifb7uN-1`lrB0I})7IQO+v6AGS_fGM%jokxsr=(8_6KxRbLvS2
z3>(Ex>$l~$j!CUGN?+Pg%g}Affvz#6+A^T5VNCJ0e_h)CW873)1R}20$tm5AhOsAh
zrFlu_=d~5n1y<qEf0|)~nI9!g(XK!%qcyqt0CrD=YzWOUiG)*_CN!l!5;TF0@+f)w
zl-{%Jh4SbI%UgwVp>jYtIx*zhX15<NTX$4xjlJ^Z26AzbK^8MuBwQiBhFL;$V!a{d
hV1~USPgyzAt#P8+*~W(%x4)g`F=uqlle#cwi=U`7dPe{N