issue #24 TimeConversion

sowon-dev · sowon-dev · commit 83113e095b55 · 2021-02-09T23:43:49.000+09:00
diff --git a/src/hackerrank/TimeConversion.java b/src/hackerrank/TimeConversion.java
@@ -0,0 +1,23 @@
+package hackerrank;
+
+public class TimeConversion {
+  static String timeConversion(String s) {
+
+    int timeInt = Integer.parseInt(s.substring(0, 2));
+    String format = s.substring(s.length()-2);
+    if(timeInt == 12 && format.equals("AM")){
+      timeInt = 0;
+    }else if(timeInt != 12 &&format.equals("PM")){
+      timeInt += 12;
+    }
+
+    String timeString = String.valueOf(timeInt).length() == 1 ? "0"+timeInt : String.valueOf(timeInt);
+    return timeString + s.substring(2,s.length()-2);
+  }
+
+  public static void main(String[] args) {
+    System.out.println(timeConversion("07:05:45PM")+", ans: 19:05:45");
+    System.out.println(timeConversion("12:01:00PM")+", ans: 12:01:00");
+    System.out.println(timeConversion("12:01:00AM")+", ans: 00:01:00");
+  }
+}
