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115 lines
2.6 KiB
Markdown
115 lines
2.6 KiB
Markdown
---
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id: acda2fb1324d9b0fa741e6b5
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title: Confirm the Ending
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challengeType: 1
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forumTopicId: 16006
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dashedName: confirm-the-ending
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---
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# --description--
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Check if a string (first argument, `str`) ends with the given target string (second argument, `target`).
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This challenge _can_ be solved with the `.endsWith()` method, which was introduced in ES2015. But for the purpose of this challenge, we would like you to use one of the JavaScript substring methods instead.
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# --hints--
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`confirmEnding("Bastian", "n")` should return `true`.
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```js
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assert.isTrue(confirmEnding('Bastian', 'n'));
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```
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`confirmEnding("Congratulation", "on")` should return `true`.
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```js
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assert.isTrue(confirmEnding('Congratulation', 'on'));
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```
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`confirmEnding("Connor", "n")` should return `false`.
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```js
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assert.isFalse(confirmEnding('Connor', 'n'));
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```
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`confirmEnding("Walking on water and developing software from a specification are easy if both are frozen", "specification")` should return `false`.
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```js
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assert.isFalse(
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confirmEnding(
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'Walking on water and developing software from a specification are easy if both are frozen',
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'specification'
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)
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);
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```
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`confirmEnding("He has to give me a new name", "name")` should return `true`.
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```js
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assert.isTrue(confirmEnding('He has to give me a new name', 'name'));
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```
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`confirmEnding("Open sesame", "same")` should return `true`.
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```js
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assert.isTrue(confirmEnding('Open sesame', 'same'));
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```
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`confirmEnding("Open sesame", "sage")` should return `false`.
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```js
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assert.isFalse(confirmEnding('Open sesame', 'sage'));
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```
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`confirmEnding("Open sesame", "game")` should return `false`.
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```js
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assert.isFalse(confirmEnding('Open sesame', 'game'));
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```
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`confirmEnding("If you want to save our world, you must hurry. We dont know how much longer we can withstand the nothing", "mountain")` should return `false`.
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```js
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assert.isFalse(
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confirmEnding(
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'If you want to save our world, you must hurry. We dont know how much longer we can withstand the nothing',
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'mountain'
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)
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);
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```
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`confirmEnding("Abstraction", "action")` should return `true`.
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```js
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assert.isTrue(confirmEnding('Abstraction', 'action'));
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```
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Your code should not use the built-in method `.endsWith()` to solve the challenge.
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```js
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assert.notMatch(__helpers.removeJSComments(code), /\.endsWith\(.*?\)\s*?;?/);
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assert.notMatch(__helpers.removeJSComments(code), /\['endsWith'\]/);
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```
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# --seed--
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## --seed-contents--
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```js
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function confirmEnding(str, target) {
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return str;
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}
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confirmEnding('Bastian', 'n');
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```
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# --solutions--
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```js
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function confirmEnding(str, target) {
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return str.substring(str.length - target.length) === target;
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}
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confirmEnding('Bastian', 'n');
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```
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