Created
February 16, 2018 12:19
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Modulo and Division Operator
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function mod(x1, x2) { | |
if (Math.floor(x1) !== x1 || Math.floor(x2) !== x2) { throw new Error("no floats, please :)"); } | |
while (x1 >= x2) { | |
x1 -= x2; | |
} | |
return x1; | |
} | |
function div(x1, x2) { | |
if (Math.floor(x1) !== x1 || Math.floor(x2) !== x2) { throw new Error("no floats, please :)"); } | |
let counter = 0; | |
while (x1 >= x2) { | |
counter += 1; | |
x1 -= x2; | |
} | |
return counter; | |
} | |
// TESTS | |
console.log("|| MOD ||"); | |
console.log(mod(10, 2) === 0, mod(10, 2), '===', 0); | |
console.log(mod(11, 2) === 1, mod(11, 2), '===', 1); | |
console.log(mod(0, 2) === 0, mod(0, 2), '===', 0); | |
console.log(mod(10, 3) === 1, mod(10, 3), '===', 1); | |
console.log(mod(11, 3) === 2, mod(11, 3), '===', 2); | |
console.log(mod(12, 3) === 0, mod(12, 3), '===', 0); | |
console.log(mod(50, 26) === 24, mod(50, 26), '===', 24); | |
try { | |
mod(10.5, 2); | |
console.log("error not working"); | |
} catch (e) { | |
console.log("error working"); | |
} | |
console.log("\n|| DIV ||"); | |
console.log(div(10, 2) === 5, div(10, 2), '===', 5); | |
console.log(div(11, 2) === 5, div(11, 2), '===', 5); | |
console.log(div(0, 2) === 0, div(0, 2), '===', 0); | |
console.log(div(10, 3) === 3, div(10, 3), '===', 3); | |
console.log(div(11, 3) === 3, div(11, 3), '===', 3); | |
console.log(div(12, 3) === 4, div(12, 3), '===', 4); | |
console.log(div(50, 26) === 1, div(50, 26), '===', 1); | |
try { | |
div(10, 2.2); | |
console.log("error not working"); | |
} catch (e) { | |
console.log("error working"); | |
} | |
// run in node using `node mod-div.js` or paste into browser console |
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