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Calculator simulation- Yuru #1

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Calculator simulation- Yuru #1

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68 changes: 66 additions & 2 deletions assets/js/numbers.js
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Original file line number Diff line number Diff line change
@@ -1,3 +1,67 @@
function compute(expression) {
// TODO - write method definition here
}
var flag = -1; //keep track of */ operations
var result = 0;
var op = new Array();
var val = new Array();
var num = "";
for(var i = 0; i <= expression.length; i++){
if(i == expression.length){
if(flag == 1) {
var o = op.pop();
if(o == "*"){
val.push(parseInt(num) * val.pop());
}
else if(o == "/"){
val.push( val.pop() / parseInt(num));
}
flag = -1;
}
}
if(expression[i] == "+" || expression[i] == "-"){
if(flag == 1) {
var o = op.pop();
if(o == "*"){
val.push(parseInt(num) * val.pop());
}
else if(o == "/"){
val.push(val.pop() / parseInt(num));
}
flag = -1;
}
else {
val.push(parseInt(num));
}
op.push(expression[i]);
num = "";
}
else if(expression[i] == "*" || expression[i] == "/"){
if (flag == 1){
var o = op.pop();
if(o == "*"){
val.push(parseInt(num) * val.pop());
}
if(o == "/"){
val.push(val.pop() / parseInt(num));
}
}
else {flag = 1;
val.push(parseInt(num));
}
op.push(expression[i]);
num = "";
}
else {
num = num + expression[i];
}
}
val.push(parseInt(num));

num = val[0];
for(var index = 0; index < op.length; index ++){
if(op[index] == "+")
num = num + val[index+1];
else num = num - val[index+1];
}
return num;
}

3 changes: 0 additions & 3 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -35,9 +35,6 @@
<!-- ---------------------------------------------------------------------------------- -->
<!-- ---------------------------------------------------------------------------------- -->
<body> <!-- body begins here -->

<!-- ====================================================== -->
<!-- ====================================================== -->
<footer>
<!-- footer of page begins here -->
<script type="text/javascript" src="./assets/js/footer-functions.js"></script>
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