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+<!DOCTYPE html>
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+<html lang="en">
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+<head>
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+ <meta charset="UTF-8">
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+ <meta http-equiv="X-UA-Compatible" content="IE=edge">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+</head>
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+<body>
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+ <script>
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+ //a
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+ function a(){
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+ alert("Привет");
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+ }
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+
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+ //cube
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+ var cube = a => a ** 3
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+
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+ //avg2
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+ var avg2 = (a , b) => (a + b)/2;
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+
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+
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+ //sum3
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+ function sum3(a = 0, b = 0, c = 0) {
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+ let sums = a + b + c;
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+ return sums;
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+ }
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+
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+ //intRandom
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+ function intRandom(a = 0, b = 0) {
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+ let random = Math.random() * (b - a) + a;
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+ return Math.floor(random);
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+ }
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+
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+ //greetAll
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+ function greetAll(){
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+ for (var i = 0;i < arguments.length;i++){
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+ arr = alert('Hi ,' + arguments[i])
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+ }
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+ }
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+
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+ //sum
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+ function sum(array){
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+ var a = 0;
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+ for (let i = 0; i < arguments.length;i++){
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+ a += arguments[i]
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+ }
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+ return a;
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+ }
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+
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+ //UNION
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+ function aSample(){
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+ console.log(a())
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+ }
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+ function cubeSample(){
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+ console.log(cube(5))
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+ }
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+ function avg2Sample(){
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+ console.log(avg2(20,50))
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+ }
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+ function sum3Sample(){
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+ console.log(sum3(5,10))
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+ }
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+ function intRandomSample(){
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+ console.log(intRandom(2,15))
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+ }
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+ function greetAllSample(){
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+ console.log(greetAll("Spiderman","Superman"))
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+ }
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+ function sumSample(){
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+ console.log(sum(20,40,60,80,100))
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+ }
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+
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+ // var sample = prompt("Введите название задания")
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+ // switch (sample.toLowerCase()){
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+ // case "a": aSample()
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+ // break
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+ // case "cube": cubeSample();
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+ // break
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+ // case "avg2": avg2Sample();
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+ // break
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+ // case "sum3": sum3Sample();
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+ // break
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+ // case "intrandom": intRandomSample();
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+ // break
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+ // case "greetall": greetAllSample("Superman","SpiderMan")
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+ // break
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+ // case "sum":sumSample();
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+ // break
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+ // }
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+
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+ //UNION declarative
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+ let union = {
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+ a(){
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+ console.log(a())
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+ },
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+ cube(){
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+ console.log(cube(5))
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+ },
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+ avg2(){
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+ console.log(avg2(20,50))
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+ },
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+ sum3(){
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+ console.log(sum3(5,10))
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+ },
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+ intRandom(){
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+ console.log(intRandom(2,15))
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+ },
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+ greetAll(){
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+ console.log(greetAll("Spiderman","Superman"))
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+ },
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+ sum(){
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+ console.log(sum(20,40,60,80,100))
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+ },
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+ };
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+ console.log(union[prompt("Введите название задания")]());
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+ </script>
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+
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+</body>
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+</html>
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Vadym Shakhmatenko