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Add a ton of JS algo snippets (#56)

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Yangshun Tay
2017-10-18 17:00:48 +08:00
committed by GitHub
parent d8c3f984e4
commit d9b9d4b5ca
10 changed files with 136 additions and 13 deletions
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15
utilities/javascript/binToInt.js Normal file
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// Does not handle negative binary numbers.
function binToInt(binary) {
let res = 0;
for (let i = 0; i < binary.length; i++) {
res = res * 2 + (+binary[i]);
}
return res;
}
console.log(binToInt('0') === parseInt('0', 2) && parseInt('0', 2) === 0);
console.log(binToInt('1') === parseInt('1', 2) && parseInt('1', 2) === 1);
console.log(binToInt('10') === parseInt('10', 2) && parseInt('10', 2) === 2);
console.log(binToInt('11') === parseInt('11', 2) && parseInt('11', 2) === 3);
console.log(binToInt('101') === parseInt('101', 2) && parseInt('101', 2) === 5);
console.log(binToInt('1100011') === parseInt('1100011', 2) && parseInt('1100011', 2) === 99);