🟢 Solve problem 26

Author: AF2B

swift/26.swift

@@ -0,0 +1,47 @@
+func removeDuplicates(_ nums: inout [Int]) -> Int {
+    if nums.count == 0 {
+        return 0
+    }
+    var i = 0
+    for j in 1..<nums.count {
+        if nums[j] != nums[i] {
+            i += 1
+            nums[i] = nums[j]
+        }
+    }
+    return i + 1
+}
+
+var nums = [1,1,2]
+print(removeDuplicates(&nums))
+
+func testRemoveDuplicates() {
+    var tests = 
+        [
+            [1, 1, 2], 
+            [0, 0, 1, 1, 1, 2, 2, 3, 3, 4],
+        ]
+    let expectedValues = [2, 5]
+    var actualValues = [Int]()
+
+    for i in 0..<tests.count {
+        actualValues.append(removeDuplicates(&tests[i]))
+    }
+
+    assertTrueInt(expectedValues, actualValues)
+}
+
+func assertTrueInt(_ expectedValues: [Int], _ actualValues: [Int]) {
+    for i in 0..<expectedValues.count {
+        let expected = expectedValues[i]
+        let actual = actualValues[i]
+
+        if expected == actual {
+            print("Test case \(i) passed")
+        } else {
+            print("Test case \(i) failed")
+        }
+    }
+}
+
+testRemoveDuplicates()