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@@ -0,0 +1,133 @@
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+/* function a (text="called function alert") {
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+ alert(text);
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+} */
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+let a = (text="called function alert") => {alert(text)};
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+let cube = (number=1) => {number**3};
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+let avg = (a=0,b=0) => {(a+b)/2};
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+let sum = (a=0,b=0,c=0) => {a+b+c};
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+let intRnd =(min,max=0) => {
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+ if(max=0){
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+ return Math.floor(Math.random()*(min-max))+max;
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+ }
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+ return Math.floor(Math.random()*(max-min))+min;
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+}
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+let greetAll = (...names) => {
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+ let greetArr = names;
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+ let someGreet = []
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+ for(let i=0; i<greetArr.length; i++){
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+ someGreet.push(names[i])
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+ }
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+ alert(someGreet);
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+}
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+/* greetAll('Kyrka','Vetal','Spydik','Vadik'); */
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+
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+let sumArr = (...numarr) => {
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+ /* let arrOfSum = numarr;
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+ let sum=0;
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+ for(let i=0; i<arrOfSum.length;i++){
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+ sum=sum+arrOfSum[i];
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+ }
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+ alert(sum); */
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+ return alert(numarr.reduce((a,b) => a+b));
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+}
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+
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+/* sumArr(...[10,20,30]); */
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+
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+var persons = [
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+ {name: "Иван", age: 17},
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+ {name: "Мария", age: 35},
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+ {name: "Алексей", age: 73},
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+ {name: "Яков", age: 12},
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+];
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+
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+function sortArray(array, property, direction=true) {
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+ if(direction === true){
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+ array.sort(function compare(a, b) {
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+ let result = (a[property] > b[property]) ? 1 :-1;
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+ return result;
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+ });
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+ return array;} else if(direction === false) {
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+ array.sort(function compare(a, b) {
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+ let result = (a[property] < b[property]) ? 1 :-1;
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+ return result;
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+ });
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+ return array;
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+ }
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+}
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+
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+let sortedobj = sortArray(persons,"name");
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+console.log(sortedobj);
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+
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+let mappedArray = ["1", {}, null, undefined, "500", 700].map((currentElement)=>{
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+ return typeof currentElement == 'string' ? Number(currentElement) : currentElement;
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+});
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+
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+let reducedArray = ["0", 5, 3, "string", null].reduce((total,currentElement)=>{
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+ if (total == undefined){
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+ return total = +total;
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+ }
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+ if( typeof total === "number" && typeof currentElement === "number"){
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+ return total * currentElement;
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+ } else {
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+ return total = total *1;
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+ }
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+
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+
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+
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+},1);
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+console.log(reducedArray);
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+
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+function filterdObj(){
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+ return Object.filter = (obj, predicate) =>
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+ Object.fromEntries(Object.entries(obj).filter(predicate));
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+
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+}
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+let filter = filterdObj();
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+var phone = {
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+ brand: "meizu",
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+ model: "m2",
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+ ram: 2,
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+ color: "black",
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+};
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+console.log(filter(phone, ([key,value])=> value == "meizu" || key == "color"));
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+
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+function sumrecurs(n) {
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+ if (n === 0){
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+ return 0;
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+ } else {
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+ return n + sumrecurs(--n)
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+ }
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+}
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+
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+
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+console.log(sumrecurs(5));
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+
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+
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+/* let map = function (obj, fn, ctx) {
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+ return Object.keys(obj).reduce((a, b) => {
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+ a[b] = fn.call(ctx || null, b, obj[b]);
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+ return a;
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+ }, {});
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+ };
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+
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+ const x = map({name: "Иван", age: 17},function(key,value){
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+ var result = {};
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+ result[key+"_"] = value + "$";
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+ return result;
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+}); */
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+let f = function(key,value) {
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+ var result = {};
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+ result[key+"_"] = value + "$";
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+ return result;
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+}
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+let map = function(obj,f) {
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+ let result = {};
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+ Object.entries(obj).forEach((item)=>{
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+ result = {...result,...f(item[0],item[1])};
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+ })
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+ return result;
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+}
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+
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+let mappedObj
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+/* console.log(x); */
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+
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