Write a JavaScript program to create a new string from a given string changing the position of first and last characters. The string length must be greater than or equal to 1

برمجة جافاسكربت java script

2021-06-01
ahmadghneem

Write a JavaScript program to create a new string from a given string changing the position of first and last characters. The string length must be greater than or equal to 1.

الأجوبة

function first_last(str1) 
  {
  if (str1.length <= 1)
  {
    return str1;
  }
  mid_char = str1.substring(1, str1.length - 1);
  return (str1.charAt(str1.length - 1)) + mid_char + str1.charAt(0);
}
console.log(first_last('a'));
console.log(first_last('ab'));
console.log(first_last('abc'));

سجل الدخول لتستطيع الإجابة

هل كان المحتوى مفيد؟

0 نعم

0 لا

أسئلة مشابهة

Write a JavaScript program to create a new string using the first and last n characters from a given sting. The string length must be greater or equal to n

Write a JavaScript program to create a new array taking the first and last elements from a given array of integers and length must be greater or equal to 1

Write a JavaScript program to create a string using the middle three characters of a given string of odd length. The string length must be greater or equal to three

Write a JavaScript program to check whether 1 appears in first or last position of a given array of integers. The array length must be greater or equal to 1

القوائم الدراسية التي ينتمي لها السؤال

لايوجد قوائم حاليا

معلومات ذات صلة

تبحث عن مدرس اونلاين؟

ابحث عن مدرسك