tp11 solution

Author: ctruchi

tp11/src/main/kotlin/fmt/kotlin/fundamentals/Tp11.kt

@@ -1,20 +1,45 @@
 package fmt.kotlin.fundamentals
 
 import kotlinx.datetime.*
+import kotlinx.datetime.DateTimeUnit.Companion.DAY
 import kotlinx.datetime.format.MonthNames
 import kotlinx.datetime.format.alternativeParsing
 import kotlinx.datetime.format.char
-import kotlin.time.Duration.Companion.days
+import kotlin.time.Duration.Companion.hours
 
 class Tp11 {
 
-    fun whichDayIsIn48h(clock: Clock): DayOfWeek = TODO()
+    fun whichDayIsIn48h(clock: Clock) = (clock.now() + 48.hours)
+        .toLocalDateTime(TimeZone.of("Europe/Paris"))
+        .dayOfWeek
 
-    fun whichDayIsInTwoDays(clock: Clock): DayOfWeek = TODO()
+    fun whichDayIsInTwoDays(clock: Clock) = clock.now()
+        .toLocalDateTime(TimeZone.of("Europe/Paris"))
+        .date
+        .plus(2, DAY)
+        .dayOfWeek
 
-    fun parseInstant(s: String): LocalDateTime = TODO()
+    fun parseInstant(s: String) =
+        LocalDateTime.Format {
+            dayOfMonth()
+            alternativeParsing({
+                char('/')
+                monthNumber()
+                char('/')
+            }) {
+                char(' ')
+                monthName(frenchMonthNames)
+                char(' ')
+            }
+            yearTwoDigits(1900)
+            chars(" à ")
+            hour()
+            char('h')
+            minute()
+        }.parse(s)
 
-    fun daysBetween(instant1: Instant, instant2: Instant): Long = TODO()
+    fun daysBetween(instant1: Instant, instant2: Instant) =
+        (instant2 - instant1).inWholeDays
 
     companion object {
         private val frenchMonthNames = MonthNames(