2-3 주식가격

week2/3. 주식가격/Solution2_3.java

@@ -0,0 +1,91 @@
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+/*
+    3. 주식 가격
+    https://programmers.co.kr/learn/courses/30/lessons/42584
+*/
+public class Solution2_3 {
+    public static void main(String[] args) {
+        int[] prices = { 1, 2, 3, 2, 3 };
+
+        System.out.println(Arrays.toString(solution(prices)));
+    }
+
+    public static int[] solution(int[] prices) {
+
+        int[] timeCountArray = new int[prices.length];
+
+        for (int i = 0; i < prices.length; i++) {
+            int timer = 0;
+
+            for (int j = i + 1; j < prices.length; j++) {
+
+                timer++;
+                timeCountArray[i] = timer;
+
+                if (prices[i] > prices[j])
+                    break;
+
+            }
+        }
+
+        return timeCountArray;
+    }
+
+    // 처음 문제 풀이 방법
+    // public static int[] solution(int[] prices) {
+
+    // List<Price> priceList = new ArrayList<>();
+
+    // for (int i = 0; i < prices.length; i++) {
+
+    // for (Price price : priceList) {
+    // price.comparePriceAndAddTime(prices[i]);
+    // }
+
+    // priceList.add(new Price(prices[i]));
+    // }
+
+    // return priceList.stream().mapToInt(price -> price.getTime()).toArray();
+    // }
+
+}
+
+class Price {
+
+    private int price;
+    private int time;
+    private boolean isStopTimer;
+
+    public int getTime() {
+        return this.time;
+    }
+
+    Price(int price) {
+        this.price = price;
+        this.time = 0;
+        this.isStopTimer = false;
+    }
+
+    public void comparePriceAndAddTime(int otherPrice) {
+
+        if (this.isStopTimer) {
+            return;
+        }
+
+        if (this.price <= otherPrice) {
+            this.time++;
+            return;
+        }
+
+        if (this.price > otherPrice) {
+            this.time++;
+            this.isStopTimer = true;
+            return;
+        }
+
+    }
+
+}