Quiz_answer

Prob1.playground/Contents.swift

@@ -1,23 +1,23 @@
-//문제1(이 문제 이상하면 풀지 마세요ㅠㅠ)
-let numArr1 = [1, 2, 3, 4, 6, 8, 34, 13, 33, 66, 66666, 789]
-var retArr1: [Int] = []
-var ret1: Int = 0
-
-for i in 0..<numArr1.count{
-    for j in 0...i{
-        ret1 += numArr1[j]
-    }
-    retArr1[i] = ret1
-}
-print(retArr1)
-
-//문제2
-let numArr2 = [1, 2, 3, 4, 6, 8, 34, 13, 33, 66, 66666, 789]
-var ret2: Int = 0
-for i in 0..<numArr2.count{
-    if numArr2[i] % 3 == 0{
+// 문제1 이상해요..........
+
+ //문제2
+
+
+ let numArr2 = [1, 2, 3, 4, 6, 8, 34, 13, 33, 66, 66666, 789]
+ var ret2: Int = 0
+
+ for i in 0..<numArr2.count{     // total 12
+
+    if numArr2[i] % 3 == 0{      // 3 , 6, 33 , 66 , 66666 , 789
         ret2 += numArr2[i]
     }
-
-}
-print(ret2)
+
+ }
+ print(ret2)
+
+let ret = numArr2.filter { (a: Int) -> Bool  in return a % 3 == 0 }.reduce(0) { (k, aa) -> Int in return aa + k }
+
+
+print(ret)
+
+

Prob1_answer.playground/Contents.swift

@@ -0,0 +1,23 @@
+//문제1(이 문제 이상하면 풀지 마세요ㅠㅠ)
+let numArr1 = [1, 2, 3, 4, 6, 8, 34, 13, 33, 66, 66666, 789]
+var retArr1: [Int] = []
+var ret1: Int = 0
+
+for i in 0..<numArr1.count{
+    for j in 0...i{
+        ret1 += numArr1[j]
+    }
+    retArr1[i] = ret1
+}
+print(retArr1)
+
+//문제2
+let numArr2 = [1, 2, 3, 4, 6, 8, 34, 13, 33, 66, 66666, 789]
+var ret2: Int = 0
+for i in 0..<numArr2.count{
+    if numArr2[i] % 3 == 0{
+        ret2 += numArr2[i]
+    }
+
+}
+print(ret2)

Question.playground/Contents.swift

@@ -4,19 +4,36 @@ import UIKit
 
 
 //입력한 숫자에서 홀수와 짝수로 나눈 후 각 각 새로운 배열로 넣어서 숫자 순으로 배열
+
 var array: [Int] = [1, 2, 5, 7, 13, 12, 8, 20, 33]
 var Array1: [Int] = []
 var Array2: [Int] = []
 for number in array{
+
     if number%2 == 0 {
-        Array1.append(number)
+
+        Array1 += [number]
+        Array1.sort()
         }
+
+
     else {
-       Array2 += [number]
+        func check (number1: Int, number2:Int) -> Bool {
+            return number1 > number2
+        }
+
+        Array2 += [number]
+
     }
 }
-let ArrayArray1 = Array1.sorted {$0 < $1}
+print(Array1)
+print(Array2)
+
+
+
+let ArrayArray1 = Array1.filter { (a: Int) -> Bool in return a%2 == 0}.sorted {$0 < $1}
 print(ArrayArray1)
-let ArrayArray2 = Array2.sorted {$0 < $1}
+let ArrayArray2 = Array2.filter { (b: Int) -> Bool in return b%2 != 0}.sorted {$0 < $1}
 print(ArrayArray2)
 
+

Question_answer.playground/Contents.swift

@@ -0,0 +1,22 @@
+//: Playground - noun: a place where people can play
+
+import UIKit
+
+
+//입력한 숫자에서 홀수와 짝수로 나눈 후 각 각 새로운 배열로 넣어서 숫자 순으로 배열
+var array: [Int] = [1, 2, 5, 7, 13, 12, 8, 20, 33]
+var Array1: [Int] = []
+var Array2: [Int] = []
+for number in array{
+    if number%2 == 0 {
+        Array1.append(number)
+        }
+    else {
+       Array2 += [number]
+    }
+}
+let ArrayArray1 = Array1.sorted {$0 < $1}
+print(ArrayArray1)
+let ArrayArray2 = Array2.sorted {$0 < $1}
+print(ArrayArray2)
+

Question_answer.playground/contents.xcplayground

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<playground version='5.0' target-platform='ios'>
+    <timeline fileName='timeline.xctimeline'/>
+</playground>