-
Notifications
You must be signed in to change notification settings - Fork 0
/
subsequence.js
60 lines (57 loc) · 1.65 KB
/
subsequence.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
var arr = [1, 2, 3, 4];
var arr2 = [2, 4];
var flag = true;
for (var i = 0; i < arr.length; i++){
if (arr[i] === arr2[i]) {
flag = true;
}
else {
flag = false;
}
}
if (flag == true) {
console.log("true");
}
else {
console.log("false");
}
const filterArr = [1, 2, 4, 5, 7, 9, 34];
const filterFunction = filterArr.filter((num) => {
return num < 10
});
console.log(filterFunction);
//reduce function of array
const sum = filterArr.reduce((acc, current, i, arr) => {
return acc + current;
})
console.log(sum);
var student = [
{ name: "Pawan", rollNumber: 23, marks: 400 },
{ name: "Tan", rollNumber: 3, marks: 170 },
{ name: "Yadav", rollNumber: 13, marks: 108 },
{name:"Krish",rollNumber:28,marks:107},
{name:"james",rollNumber:3,marks:144}
]
let names = [];
for (var i = 0; i < student.length; i++){
names.push(student[i].name.toUpperCase());
}
console.log(names);
//same with Map() function
const namesMap = student.map((item) => item.name.toLowerCase())
console.log("map function Used in Array", namesMap);
//filter
const filterMarks = student.filter((item) => item.marks > 60);
const details = student.filter((item) =>
item.marks > 05 && item.rollNumber > 10);
// let nameDetails = namesMap.name;
// let rollDetails = student.rollNumber;
console.log("details", details);
// console.log(nameDetails, rollDetails);
// console.log(student.name)
//sum of marks of all students
const marksSum = student.reduce((acc, curr) => acc + curr.marks, 0)
console.log(marksSum);
//filter and map
const combine = student.filter((item) => item.marks > 40).map((item) => item.name);
console.log(combine);