kermit-klein
/ newRecursive.js
Created
August 24, 2021 20:56
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| function calculate(obj) { | |
| switch (obj.type) { | |
| case "number": | |
| return parseInt(obj.value); | |
| case "^": | |
| return calculate(obj.left) ** calculate(obj.right); | |
| case "+": | |
| return calculate(obj.left) + calculate(obj.right); | |
| case "-": | |
| return calculate(obj.left) - calculate(obj.right); |
kermit-klein
/ newParser.js
Created
August 24, 2021 20:53
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| function parse(fullString) { | |
| let strArray = fullString.split(" "); | |
| let pos = 0; | |
| function checkPos() { | |
| return strArray[pos]; | |
| } | |
| function isNumber(e) { | |
| return e !== undefined && e.match(/^-?([1-9][0-9]*|([0]))$/) !== null; |
kermit-klein
/ parser2.js
Created
August 24, 2021 17:10
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| function parse(fullString) { | |
| let strArray = fullString.split(" "); | |
| let pos = 0; | |
| function checkPos() { | |
| return strArray[pos]; | |
| } | |
| function isNumber(e) { | |
| return e !== undefined && e.match(/^-?([1-9][0-9]*|([0]))$/) !== null; |
kermit-klein
/ recursive.js
Created
August 24, 2021 12:31
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| function calculate(obj) { | |
| switch (obj.type) { | |
| case "number": | |
| return parseInt(obj.value); | |
| case "+": | |
| return calculate(obj.left) + calculate(obj.right); | |
| case "-": | |
| return calculate(obj.left) - calculate(obj.right); | |
| case "*": | |
| return calculate(obj.left) * calculate(obj.right); |
kermit-klein
/ parser.js
Created
August 24, 2021 09:50
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| function splitString(str) { | |
| let seperatedString = str.split(" "); | |
| if ( | |
| !seperatedString.every( | |
| (e) => /^-?([1-9][0-9]*|([0]))$|^[\+\*\/\-]$/.test(e) | |
| ) | |
| ) { | |
| throw SyntaxError("Invalid Format"); | |
| } |
kermit-klein
/ iterator.js
Created
August 23, 2021 05:28
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| const calcString = (str) => { | |
| let seperatedStr = str.split(" "); | |
| if ( | |
| !seperatedStr.every((e) => /^-?([1-9][0-9]*|([0]))$|^[\+\*\/\-]$/.test(e)) // Wanted to check input validity, can be removed | |
| ) { | |
| throw SyntaxError("Invalid Format"); | |
| } | |
| let definedOps = [ | |
| { "*": (x, y) => x * y, "/": (x, y) => x / y }, |
kermit-klein
/ test.js
Last active
August 24, 2021 17:08
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| let testStrings = [ | |
| { str: "1 + 1", ans: 2 }, | |
| { str: "2 * 8", ans: 16 }, | |
| { str: "6 - 0", ans: 6 }, | |
| { str: "4 / 2", ans: 2 }, | |
| { str: "5 + 7 * 2 - 4", ans: 15 }, | |
| { str: "15 - 10 * -2", ans: 35 }, | |
| { str: "1050 + 7 - 56 * 2", ans: 945 }, | |
| { str: "50 / 2 / 5 * 3 - -10", ans: 25 }, | |
| { str: "0 + 1 - -2 * -3", ans: -5 }, |
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| var a = 1; | |
| function b() { | |
| var a; | |
| a = function () {} | |
| a = 10; | |
| return; | |
| } | |
| b(); | |
| alert(a); |
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| var a = 1; | |
| function b() { | |
| a = 10; | |
| return; | |
| function a() {} | |
| } | |
| b(); | |
| alert(a); |
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| var foo = 1; | |
| function bar() { | |
| var foo; | |
| if (!foo) { | |
| foo = 10; | |
| } | |
| alert(foo); | |
| } | |
| bar(); |
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