Fixed indentation of the code.

Author: Kelvin Lau

Select Minimum Maximum/SelectMinimumMaximum.playground/Contents.swift

@@ -1,67 +1,67 @@
 // Compare each item to find minimum
 func minimum<T: Comparable>(_ array: [T]) -> T? {
-    var array = array
-    guard !array.isEmpty else {
-        return nil
-    }
-
-    var minimum = array.removeFirst()
-    for element in array {
-        minimum = element < minimum ? element : minimum
-    }
-    return minimum
+  var array = array
+  guard !array.isEmpty else {
+    return nil
+  }
+  
+  var minimum = array.removeFirst()
+  for element in array {
+    minimum = element < minimum ? element : minimum
+  }
+  return minimum
 }
 
 // Compare each item to find maximum
 func maximum<T: Comparable>(_ array: [T]) -> T? {
-    var array = array
-    guard !array.isEmpty else {
-        return nil
-    }
-
-    var maximum = array.removeFirst()
-    for element in array {
-        maximum = element > maximum ? element : maximum
-    }
-    return maximum
+  var array = array
+  guard !array.isEmpty else {
+    return nil
+  }
+  
+  var maximum = array.removeFirst()
+  for element in array {
+    maximum = element > maximum ? element : maximum
+  }
+  return maximum
 }
 
 // Compare in pairs to find minimum and maximum
 func minimumMaximum<T: Comparable>(_ array: [T]) -> (minimum: T, maximum: T)? {
-    var array = array
-    guard !array.isEmpty else {
-        return nil
+  var array = array
+  guard !array.isEmpty else {
+    return nil
+  }
+  
+  var minimum = array.first!
+  var maximum = array.first!
+  
+  let hasOddNumberOfItems = array.count % 2 != 0
+  if hasOddNumberOfItems {
+    array.removeFirst()
+  }
+  
+  while !array.isEmpty {
+    let pair = (array.removeFirst(), array.removeFirst())
+    
+    if pair.0 > pair.1 {
+      if pair.0 > maximum {
+        maximum = pair.0
+      }
+      if pair.1 < minimum {
+        minimum = pair.1
+      }
+    } else {
+      if pair.1 > maximum {
+        maximum = pair.1
+      }
+      if pair.0 < minimum {
+        minimum = pair.0
+      }
     }
-
-    var minimum = array.first!
-    var maximum = array.first!
-
-    let hasOddNumberOfItems = array.count % 2 != 0
-    if hasOddNumberOfItems {
-        array.removeFirst()
-    }
-
-    while !array.isEmpty {
-        let pair = (array.removeFirst(), array.removeFirst())
-
-        if pair.0 > pair.1 {
-            if pair.0 > maximum {
-                maximum = pair.0
-            }
-            if pair.1 < minimum {
-                minimum = pair.1
-            }
-        } else {
-            if pair.1 > maximum {
-                maximum = pair.1
-            }
-            if pair.0 < minimum {
-                minimum = pair.0
-            }
-        }
-    }
-
-    return (minimum, maximum)
+  }
+  
+  return (minimum, maximum)
 }
 
 // Test of minimum and maximum functions