17PushPopSlice.js

/*  NOTE : In array some of the method are mutable push,pop,splice,unshift,shift and some of them are immutable concat,slice,map  */

/* write a program to get first n element of an array*/
// let n = 3;
// let arr = [1, 8, 9, 7, 2, 4];
// console.log(arr.slice(0, n));

/* write a program to get last n element of an array*/
// let n = 3;
// let arr = [1, 8, 9, 7, 2, 4];
// console.log(arr.slice(arr.length - n));

/* write a program to check string is blank or not*/
// let str = "";
// if(str == ""){
//     console.log("empty")
// }else{
//     console.log("not empty")
// }

/* write a program to test whether the character at a given (character index) is lowercase */
// let namee = "puneeth";
// if (namee[2] === namee[2].toLowerCase()) {
//   console.log("lower");
// } else {
//   console.log("not lower");
// }

/* write a program to check if an element exits in array or not */
// let arr = ["hello", "a", 23, "24"];
// let item = "a";
// if (arr.indexOf(item) != -1) {
//   console.log("element exits in array");
// } else {
//   console.log("element not exits");
// }