Removing Elements

8_kyu/Removing Elements/README.md

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+## Removing Elements
+
+https://www.codewars.com/kata/5769b3802ae6f8e4890009d2
+
+Take an array and remove every second element from the array. Always keep the first element and start removing with the next element.
+
+Example:
+["Keep", "Remove", "Keep", "Remove", "Keep", ...] --> ["Keep", "Keep", "Keep", ...]
+
+None of the arrays will be empty, so you don't have to worry about that!

8_kyu/Removing Elements/index.test.ts

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+import { removeEveryOther } from "./index";
+
+describe("Tests", () => {
+    it("example", () => {
+        expect(removeEveryOther(["Hello", "Goodbye", "Hello Again"])).toEqual(["Hello", "Hello Again"]);
+        expect(removeEveryOther([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])).toEqual([1, 3, 5, 7, 9]);
+        expect(removeEveryOther([[1, 2]])).toEqual([[1, 2]]);
+        expect(removeEveryOther([["Goodbye"], { Great: "Job" }])).toEqual([["Goodbye"]]);
+    });
+});

8_kyu/Removing Elements/index.ts

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+export function removeEveryOther<T>(arr: T[]): T[] {
+    return arr.filter((el, idx) => idx % 2 === 0);
+}

README.md

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 ### Katas solved
 
-`Total`: 81 \
-`8_kyu`: 64 \
+`Total`: 82 \
+`8_kyu`: 65 \
 `7_kyu`: 13 \
 `6_kyu`: 4 \
 `5_kyu`: 0 \

kata.md

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-8 kyu - Removing Elements - https://www.codewars.com/kata/5769b3802ae6f8e4890009d2
 8 kyu - Remove duplicates from list - https://www.codewars.com/kata/57a5b0dfcf1fa526bb000118
 8 kyu - A Needle in the Haystack - https://www.codewars.com/kata/56676e8fabd2d1ff3000000c
 8 kyu - Convert a string to an array - https://www.codewars.com/kata/57e76bc428d6fbc2d500036d