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elementary.js
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elementary.js
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"use strict";
/*
Create 3 functions which each take (a, b) as arguments:
multiply that acts like the * operator, without using it.
divide that acts like the integer division operator /, without using it.
modulo that acts like the % operator, without using it.
*/
function flipNeg(num) {
if (num < 0) return -num;
return num
}
function checkNeg(a, b) {
if ((a < 0 && b >= 0) || (a >= 0 && b < 0)) return true
return false
}
function multiply(a, b) {
const check = checkNeg(a, b)
a = flipNeg(a)
b = flipNeg(b)
let x = 0;
for (let i = 0; i < b; i++) {
x += a;
}
if (check) x = -x
return x;
}
function divide(a, b) {
const check = checkNeg(a, b)
a = flipNeg(a)
b = flipNeg(b)
let x = 0;
for (; a >= b;) {
x += 1;
a = a - b;
}
if (check) x = -x
return x
}
function modulo(a, b) {
let check = false;
if (a < 0) {
check = true
}
a = flipNeg(a)
b = flipNeg(b)
for (; a >= b;) {
a = a - b;
}
if (check) a = -a
return a
}