diff --git a/README.md b/README.md
index d0286c859f..d660e2b0ab 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,7 @@
 # java-racingcar-precourse
+
+- [x] 입력 검증기능
+- [x] 레이스 턴기능
+- [x] 레이스 실행&출력기능
+- [x] 선두주자 index 찾는기능
+- [x] 선두주자 문자열로 표현해 가져오는기능
\ No newline at end of file
diff --git a/src/main/java/racingcar/Application.java b/src/main/java/racingcar/Application.java
index a17a52e724..b1d2a89be9 100644
--- a/src/main/java/racingcar/Application.java
+++ b/src/main/java/racingcar/Application.java
@@ -1,7 +1,101 @@
 package racingcar;
 
+import java.util.ArrayList;
+
 public class Application {
     public static void main(String[] args) {
         // TODO: 프로그램 구현
+
+        // 입력받기
+        System.out.println("경주할 자동차 이름을 입력하세요.(이름은 쉽표(,) 기준으로 구분)");
+        String[] cars = camp.nextstep.edu.missionutils.Console.readLine().split(",");
+
+        System.out.println("시도할 횟수는 몇 회인가요?");
+        int maxTryCnt = Integer.parseInt(camp.nextstep.edu.missionutils.Console.readLine());
+        int currentTryCnt = 0;
+        int[] currentRecord = new int[]{0, 0, 0};
+
+        System.out.println();
+        System.out.println("실행결과");
+
+        testValidInput(cars);
+
+        while (currentTryCnt < maxTryCnt) {
+            raceOneTurn(cars, currentRecord);
+            currentTryCnt++;
+            System.out.println();
+        }
+
+        int[] maxIndices = findMaxIndices(currentRecord);
+
+        ArrayList<String> winners = findWinners(cars, currentRecord);
+
+        System.out.println("최종 우승자 : " + String.join(", ", winners));
+    }
+
+    public static void testValidInput(String[] cars) {
+
+        for (int i = 0; i < cars.length; i++) {
+            if (cars[i].length() > 5) {
+                throw new IllegalArgumentException("입력이올바르지 않습니다");
+            }
+        }
+    }
+
+    static void raceOneTurn(String[] cars, int[] currentRecord) {
+        for (int i = 0; i < cars.length; i++) {
+            moveAndPrintCar(cars[i], currentRecord, i);
+        }
     }
-}
+
+    static void moveAndPrintCar(String carName, int[] currentRecord, int index) {
+        int randNum = camp.nextstep.edu.missionutils.Randoms.pickNumberInRange(0, 9);
+        if (randNum >= 4) {
+            currentRecord[index]++;
+        }
+        System.out.println(carName + " : " + "-".repeat(currentRecord[index]));
+    }
+
+    public static int[] findMaxIndices(int[] arr) {
+        if (arr == null || arr.length == 0) {
+            return new int[0];
+        }
+
+        // 1. 최댓값 찾기
+        int maxValue = arr[0];
+        for (int num : arr) {
+            maxValue = Math.max(maxValue, num);
+        }
+
+        // 2. 최댓값의 개수 세기
+        int count = 0;
+        for (int num : arr) {
+            if (num == maxValue) {
+                count++;
+            }
+        }
+
+        // 3. 결과 배열 생성 및 최댓값의 인덱스 저장
+        int[] maxIndices = new int[count];
+        int index = 0;
+        for (int i = 0; i < arr.length; i++) {
+            if (arr[i] == maxValue) {
+                maxIndices[index++] = i;
+            }
+        }
+
+        return maxIndices;
+    }
+
+    private static ArrayList<String> findWinners(String[] cars, int[] currentRecord) {
+        int[] maxIndices = findMaxIndices(currentRecord);
+        ArrayList<String> winners = new ArrayList<>();
+
+        for (int i = 0; i < maxIndices.length; i++) {
+            winners.add(cars[maxIndices[i]]);
+        }
+
+        return winners;
+    }
+
+}
\ No newline at end of file
diff --git a/src/test/java/racingcar/ApplicationTest.java b/src/test/java/racingcar/ApplicationTest.java
index 1d35fc33fe..1cb50005c1 100644
--- a/src/test/java/racingcar/ApplicationTest.java
+++ b/src/test/java/racingcar/ApplicationTest.java
@@ -1,12 +1,14 @@
 package racingcar;
 
 import camp.nextstep.edu.missionutils.test.NsTest;
+import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 
 import static camp.nextstep.edu.missionutils.test.Assertions.assertRandomNumberInRangeTest;
 import static camp.nextstep.edu.missionutils.test.Assertions.assertSimpleTest;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
 
 class ApplicationTest extends NsTest {
     private static final int MOVING_FORWARD = 4;
@@ -31,6 +33,33 @@ class ApplicationTest extends NsTest {
         );
     }
 
+    @Test
+    @DisplayName("findMaxIndices 테스트 - 최댓값이 하나인 경우")
+    void testFindMaxIndicesSingleMax() {
+        int[] arr = {1, 3, 2};
+        int[] result = Application.findMaxIndices(arr);
+
+        assertArrayEquals(new int[]{1}, result);
+    }
+
+    @Test
+    @DisplayName("findMaxIndices 테스트 - 최댓값이 여러 개인 경우")
+    void testFindMaxIndicesMultipleMax() {
+        int[] arr = {3, 3, 2, 3};
+        int[] result = Application.findMaxIndices(arr);
+
+        assertArrayEquals(new int[]{0, 1, 3}, result);
+    }
+
+    @Test
+    @DisplayName("findMaxIndices 테스트 - 빈 배열인 경우")
+    void testFindMaxIndicesEmptyArray() {
+        int[] arr = {};
+        int[] result = Application.findMaxIndices(arr);
+
+        assertArrayEquals(new int[]{}, result);
+    }
+
     @Override
     public void runMain() {
         Application.main(new String[]{});