Initial 7 exercises done

This commit is contained in:
Amber chawla 2021-12-19 17:10:22 +05:30
parent 6b0e0e55e3
commit f4bbdb15eb
14 changed files with 86 additions and 43 deletions

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@ -1,5 +1,5 @@
const helloWorld = function() { const helloWorld = function() {
return '' return 'Hello, World!';
}; };
module.exports = helloWorld; module.exports = helloWorld;

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@ -1,5 +1,13 @@
const repeatString = function() { const repeatString = function(str, repeatTimes) {
if (repeatTimes < 0)
return 'ERROR';
let result = '';
for (let i = 0; i < repeatTimes; i++)
{
result += str;
}
return result;
}; };
// Do not edit below this line // Do not edit below this line

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@ -4,19 +4,19 @@ describe('repeatString', () => {
test('repeats the string', () => { test('repeats the string', () => {
expect(repeatString('hey', 3)).toEqual('heyheyhey'); expect(repeatString('hey', 3)).toEqual('heyheyhey');
}); });
test.skip('repeats the string many times', () => { test('repeats the string many times', () => {
expect(repeatString('hey', 10)).toEqual('heyheyheyheyheyheyheyheyheyhey'); expect(repeatString('hey', 10)).toEqual('heyheyheyheyheyheyheyheyheyhey');
}); });
test.skip('repeats the string 1 times', () => { test('repeats the string 1 times', () => {
expect(repeatString('hey', 1)).toEqual('hey'); expect(repeatString('hey', 1)).toEqual('hey');
}); });
test.skip('repeats the string 0 times', () => { test('repeats the string 0 times', () => {
expect(repeatString('hey', 0)).toEqual(''); expect(repeatString('hey', 0)).toEqual('');
}); });
test.skip('returns ERROR with negative numbers', () => { test('returns ERROR with negative numbers', () => {
expect(repeatString('hey', -1)).toEqual('ERROR'); expect(repeatString('hey', -1)).toEqual('ERROR');
}); });
test.skip('repeats the string a random amount of times', function () { test('repeats the string a random amount of times', function () {
/*The number is generated by using Math.random to get a value from between /*The number is generated by using Math.random to get a value from between
0 to 1, when this is multiplied by 1000 and rounded down with Math.floor it 0 to 1, when this is multiplied by 1000 and rounded down with Math.floor it
equals a number between 0 to 999 (this number will change everytime you run equals a number between 0 to 999 (this number will change everytime you run
@ -31,7 +31,7 @@ describe('repeatString', () => {
was randomaly generated. */ was randomaly generated. */
expect(repeatString('hey', number).match(/((hey))/g).length).toEqual(number); expect(repeatString('hey', number).match(/((hey))/g).length).toEqual(number);
}); });
test.skip('works with blank strings', () => { test('works with blank strings', () => {
expect(repeatString('', 10)).toEqual(''); expect(repeatString('', 10)).toEqual('');
}); });
}); });

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@ -1,5 +1,10 @@
const reverseString = function(str) { const reverseString = function(str) {
if (str.length < 2)
return str;
const arr = str.split("");
const reverse_arr = arr.reverse();
return reverse_arr.join("");
}; };
// Do not edit below this line // Do not edit below this line

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@ -5,14 +5,14 @@ describe('reverseString', () => {
expect(reverseString('hello')).toEqual('olleh'); expect(reverseString('hello')).toEqual('olleh');
}); });
test.skip('reverses multiple words', () => { test('reverses multiple words', () => {
expect(reverseString('hello there')).toEqual('ereht olleh') expect(reverseString('hello there')).toEqual('ereht olleh')
}) })
test.skip('works with numbers and punctuation', () => { test('works with numbers and punctuation', () => {
expect(reverseString('123! abc!')).toEqual('!cba !321') expect(reverseString('123! abc!')).toEqual('!cba !321')
}) })
test.skip('works with blank strings', () => { test('works with blank strings', () => {
expect(reverseString('')).toEqual('') expect(reverseString('')).toEqual('')
}) })
}); });

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@ -1,5 +1,12 @@
const removeFromArray = function() { const removeFromArray = function(arr, ...restArg) {
for (let i = 0; i < restArg.length; i++)
{
const index = arr.indexOf(restArg[i]);
if (index > -1) {
arr.splice(index, 1);
}
}
return arr;
}; };
// Do not edit below this line // Do not edit below this line

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@ -4,22 +4,22 @@ describe('removeFromArray', () => {
test('removes a single value', () => { test('removes a single value', () => {
expect(removeFromArray([1, 2, 3, 4], 3)).toEqual([1, 2, 4]); expect(removeFromArray([1, 2, 3, 4], 3)).toEqual([1, 2, 4]);
}); });
test.skip('removes multiple values', () => { test('removes multiple values', () => {
expect(removeFromArray([1, 2, 3, 4], 3, 2)).toEqual([1, 4]); expect(removeFromArray([1, 2, 3, 4], 3, 2)).toEqual([1, 4]);
}); });
test.skip('ignores non present values', () => { test('ignores non present values', () => {
expect(removeFromArray([1, 2, 3, 4], 7, "tacos")).toEqual([1, 2, 3, 4]); expect(removeFromArray([1, 2, 3, 4], 7, "tacos")).toEqual([1, 2, 3, 4]);
}); });
test.skip('ignores non present values, but still works', () => { test('ignores non present values, but still works', () => {
expect(removeFromArray([1, 2, 3, 4], 7, 2)).toEqual([1, 3, 4]); expect(removeFromArray([1, 2, 3, 4], 7, 2)).toEqual([1, 3, 4]);
}); });
test.skip('can remove all values', () => { test('can remove all values', () => {
expect(removeFromArray([1, 2, 3, 4], 1, 2, 3, 4)).toEqual([]); expect(removeFromArray([1, 2, 3, 4], 1, 2, 3, 4)).toEqual([]);
}); });
test.skip('works with strings', () => { test('works with strings', () => {
expect(removeFromArray(["hey", 2, 3, "ho"], "hey", 3)).toEqual([2, "ho"]); expect(removeFromArray(["hey", 2, 3, "ho"], "hey", 3)).toEqual([2, "ho"]);
}); });
test.skip('only removes same type', () => { test('only removes same type', () => {
expect(removeFromArray([1, 2, 3], "1", 3)).toEqual([1, 2]); expect(removeFromArray([1, 2, 3], "1", 3)).toEqual([1, 2]);
}); });
}); });

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@ -1,5 +1,14 @@
const sumAll = function() { const sumAll = function(st,end) {
if (typeof(st)!== 'number' || typeof(end) !== 'number' || st < 0 || end < 0)
return 'ERROR';
let sum = 0;
for (let i = Math.min(st,end); i <= Math.max(st,end); i++)
{
sum += i;
}
return sum;
}; };
// Do not edit below this line // Do not edit below this line

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@ -4,19 +4,19 @@ describe('sumAll', () => {
test('sums numbers within the range', () => { test('sums numbers within the range', () => {
expect(sumAll(1, 4)).toEqual(10); expect(sumAll(1, 4)).toEqual(10);
}); });
test.skip('works with large numbers', () => { test('works with large numbers', () => {
expect(sumAll(1, 4000)).toEqual(8002000); expect(sumAll(1, 4000)).toEqual(8002000);
}); });
test.skip('works with larger number first', () => { test('works with larger number first', () => {
expect(sumAll(123, 1)).toEqual(7626); expect(sumAll(123, 1)).toEqual(7626);
}); });
test.skip('returns ERROR with negative numbers', () => { test('returns ERROR with negative numbers', () => {
expect(sumAll(-10, 4)).toEqual('ERROR'); expect(sumAll(-10, 4)).toEqual('ERROR');
}); });
test.skip('returns ERROR with non-number parameters', () => { test('returns ERROR with non-number parameters', () => {
expect(sumAll(10, "90")).toEqual('ERROR'); expect(sumAll(10, "90")).toEqual('ERROR');
}); });
test.skip('returns ERROR with non-number parameters', () => { test('returns ERROR with non-number parameters', () => {
expect(sumAll(10, [90, 1])).toEqual('ERROR'); expect(sumAll(10, [90, 1])).toEqual('ERROR');
}); });
}); });

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@ -1,5 +1,13 @@
const leapYears = function() { const leapYears = function(year) {
if (typeof(year) !== 'number')
return 'ERROR';
if((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
{
return true;
}
else
return false;
}; };
// Do not edit below this line // Do not edit below this line

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@ -4,19 +4,19 @@ describe('leapYears', () => {
test('works with non century years', () => { test('works with non century years', () => {
expect(leapYears(1996)).toBe(true); expect(leapYears(1996)).toBe(true);
}); });
test.skip('works with non century years', () => { test('works with non century years', () => {
expect(leapYears(1997)).toBe(false); expect(leapYears(1997)).toBe(false);
}); });
test.skip('works with ridiculously futuristic non century years', () => { test('works with ridiculously futuristic non century years', () => {
expect(leapYears(34992)).toBe(true); expect(leapYears(34992)).toBe(true);
}); });
test.skip('works with century years', () => { test('works with century years', () => {
expect(leapYears(1900)).toBe(false); expect(leapYears(1900)).toBe(false);
}); });
test.skip('works with century years', () => { test('works with century years', () => {
expect(leapYears(1600)).toBe(true); expect(leapYears(1600)).toBe(true);
}); });
test.skip('works with century years', () => { test('works with century years', () => {
expect(leapYears(700)).toBe(false); expect(leapYears(700)).toBe(false);
}); });
}); });

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@ -1,9 +1,15 @@
const ftoc = function() { const ftoc = function(temp) {
if (typeof(temp) !== 'number')
return 'ERROR';
return Math.round( (temp-32) * 50 / 9 + Number.EPSILON) / 10;
}; };
const ctof = function() { const ctof = function(temp) {
if (typeof(temp) !== 'number')
return 'ERROR';
return Math.round((temp*9/5 + 32)*10 + Number.EPSILON) / 10;
}; };
// Do not edit below this line // Do not edit below this line

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@ -4,22 +4,22 @@ describe('ftoc', () => {
test('works', () => { test('works', () => {
expect(ftoc(32)).toEqual(0); expect(ftoc(32)).toEqual(0);
}); });
test.skip('rounds to 1 decimal', () => { test('rounds to 1 decimal', () => {
expect(ftoc(100)).toEqual(37.8); expect(ftoc(100)).toEqual(37.8);
}); });
test.skip('works with negatives', () => { test('works with negatives', () => {
expect(ftoc(-100)).toEqual(-73.3); expect(ftoc(-100)).toEqual(-73.3);
}); });
}); });
describe('ctof', () => { describe('ctof', () => {
test.skip('works', () => { test('works', () => {
expect(ctof(0)).toEqual(32); expect(ctof(0)).toEqual(32);
}); });
test.skip('rounds to 1 decimal', () => { test('rounds to 1 decimal', () => {
expect(ctof(73.2)).toEqual(163.8); expect(ctof(73.2)).toEqual(163.8);
}); });
test.skip('works with negatives', () => { test('works with negatives', () => {
expect(ctof(-10)).toEqual(14); expect(ctof(-10)).toEqual(14);
}); });
}); });

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@ -26,7 +26,7 @@
"eslintConfig": { "eslintConfig": {
"root": true "root": true
}, },
"jest": { "jest": {
"testPathIgnorePatterns": [ "testPathIgnorePatterns": [
"generator-exercise/" "generator-exercise/"
] ]