Answers for "reverse a string in o(n)"

2

how to reverse a string

function reverseString(str) {
    return str.split("").reverse().join("");
}
reverseString("hello");
Posted by: Guest on May-13-2020
0

reverse a string

//////////////////////////////////////
function reverse(str) {
  if(!str || str.length<2 || typeof str !== 'string'){
    return 'hmmm that is not good...';
  	}
  return str.split('').reverse().join('');
}

//////////////////////////////////////
function reverse(str) {
  let n = str.length;
  let s = '';
  for (let i = n - 1; i >= 0; i--) {
    s += str[i];
  }
  console.log(s);
}
reverse('Hello'); // olleH
Posted by: Guest on June-23-2021

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