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Numbers assignment #12

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Numbers assignment #12

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e097571
closing in on solution
livinginbeta Jul 2, 2020
af9cc44
need to account for multi-digit numbers and order of operations
livinginbeta Jul 2, 2020
a12404c
order of operations fixed; need to account for double-digit numbers
livinginbeta Jul 2, 2020
fb716d1
closer...
livinginbeta Jul 2, 2020
633ce98
updated code and cleaned up
livinginbeta Jul 2, 2020
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98 changes: 98 additions & 0 deletions assets/js/numbers.js
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Original file line number Diff line number Diff line change
@@ -1,3 +1,101 @@
function compute(expression) {
// TODO - write method definition here
var expressionArray = new Array();
var expressionArray = expression.split('');
var solutionSwap;

//MULTIPLICATION
for (counter = 0; counter < 4; counter++) {
for (element = 0; element < expressionArray.length; element++) {
if (expressionArray[element] == '*') {
if (!isNaN(parseFloat(expressionArray[element -2])) && !isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = ((parseFloat(expressionArray[element -2]) * 10) + (parseFloat(expressionArray[element -1]))) * ((parseFloat(expressionArray[element +1]) * 10) + (parseFloat(expressionArray[element +2])));
expressionArray.splice(element-2, 5, solutionSwap);
}
if (!isNaN(parseFloat(expressionArray[element -2])) && isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = ((parseFloat(expressionArray[element -2]) * 10) + (parseFloat(expressionArray[element -1]))) * parseFloat(expressionArray[element +1]);
expressionArray.splice(element-2, 4, solutionSwap);
}
if (isNaN(parseFloat(expressionArray[element -2])) && !isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = parseFloat(expressionArray[element -1]) * ((parseFloat(expressionArray[element +1]) * 10) + (parseFloat(expressionArray[element +2])));
expressionArray.splice(element-1, 4, solutionSwap);
}
if (isNaN(parseFloat(expressionArray[element -2])) && isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = parseFloat(expressionArray[element -1]) * parseFloat(expressionArray[element +1]);
expressionArray.splice(element-1, 3, solutionSwap);
}
}
}
}
//DIVISION
for (counter = 0; counter < 4; counter++) {
for (element = 0; element < expressionArray.length; element++) {
if (expressionArray[element] == '/') {
if (!isNaN(parseFloat(expressionArray[element -2])) && !isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = ((parseFloat(expressionArray[element -2]) * 10) + (parseFloat(expressionArray[element -1]))) / ((parseFloat(expressionArray[element +1]) * 10) + (parseFloat(expressionArray[element +2])));
expressionArray.splice(element-2, 5, solutionSwap);
}
if (!isNaN(parseFloat(expressionArray[element -2])) && isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = ((parseFloat(expressionArray[element -2]) * 10) + (parseFloat(expressionArray[element -1]))) / parseFloat(expressionArray[element +1]);
expressionArray.splice(element-2, 4, solutionSwap);
}
if (isNaN(parseFloat(expressionArray[element -2])) && !isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = parseFloat(expressionArray[element -1]) / ((parseFloat(expressionArray[element +1]) * 10) + (parseFloat(expressionArray[element +2])));
expressionArray.splice(element-1, 4, solutionSwap);
}
if (isNaN(parseFloat(expressionArray[element -2])) && isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = parseFloat(expressionArray[element -1]) / parseFloat(expressionArray[element +1]);
expressionArray.splice(element-1, 3, solutionSwap);
}
}
}
}
//ADDITION
for (counter = 0; counter < 4; counter++) {
for (element = 0; element < expressionArray.length; element++) {
if (expressionArray[element] == '+') {
if (!isNaN(parseFloat(expressionArray[element -2])) && !isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = ((parseFloat(expressionArray[element -2]) * 10) + (parseFloat(expressionArray[element -1]))) + ((parseFloat(expressionArray[element +1]) * 10) + (parseFloat(expressionArray[element +2])));
expressionArray.splice(element-2, 5, solutionSwap);
}
if (!isNaN(parseFloat(expressionArray[element -2])) && isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = ((parseFloat(expressionArray[element -2]) * 10) + (parseFloat(expressionArray[element -1]))) + parseFloat(expressionArray[element +1]);
expressionArray.splice(element-2, 4, solutionSwap);
}
if (isNaN(parseFloat(expressionArray[element -2])) && !isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = parseFloat(expressionArray[element -1]) + ((parseFloat(expressionArray[element +1]) * 10) + (parseFloat(expressionArray[element +2])));
expressionArray.splice(element-1, 4, solutionSwap);
}
if (isNaN(parseFloat(expressionArray[element -2])) && isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = parseFloat(expressionArray[element -1]) + parseFloat(expressionArray[element +1]);
expressionArray.splice(element-1, 3, solutionSwap);
}
}
}
}
//SUBTRACTION
for (counter = 0; counter < 4; counter++) {
for (element = 0; element < expressionArray.length; element++) {
if (expressionArray[element] == '-') {
if (!isNaN(parseFloat(expressionArray[element -2])) && !isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = ((parseFloat(expressionArray[element -2]) * 10) + (parseFloat(expressionArray[element -1]))) - ((parseFloat(expressionArray[element +1]) * 10) + (parseFloat(expressionArray[element +2])));
expressionArray.splice(element-2, 5, solutionSwap);
}
if (!isNaN(parseFloat(expressionArray[element -2])) && isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = ((parseFloat(expressionArray[element -2]) * 10) + (parseFloat(expressionArray[element -1]))) - parseFloat(expressionArray[element +1]);
expressionArray.splice(element-2, 4, solutionSwap);
}
if (isNaN(parseFloat(expressionArray[element -2])) && !isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = parseFloat(expressionArray[element -1]) - ((parseFloat(expressionArray[element +1]) * 10) + (parseFloat(expressionArray[element +2])));
expressionArray.splice(element-1, 4, solutionSwap);
}
if (isNaN(parseFloat(expressionArray[element -2])) && isNaN(parseFloat(expressionArray[element +2]))) {
solutionSwap = parseFloat(expressionArray[element -1]) - parseFloat(expressionArray[element +1]);
expressionArray.splice(element-1, 3, solutionSwap);
}
}
}
}

return expressionArray;
}