Package g2101_2200.s2109_adding_spaces_to_a_string

Class Solution

java.lang.Object
g2101_2200.s2109_adding_spaces_to_a_string.Solution
public class Solution extends java.lang.Object
2109 - Adding Spaces to a String.

Medium

You are given a 0-indexed string s and a 0-indexed integer array spaces that describes the indices in the original string where spaces will be added. Each space should be inserted before the character at the given index.

  • For example, given s = "EnjoyYourCoffee" and spaces = [5, 9], we place spaces before 'Y' and 'C', which are at indices 5 and 9 respectively. Thus, we obtain "Enjoy **Y**our **C**offee".

Return the modified string after the spaces have been added.

Example 1:

Input: s = “LeetcodeHelpsMeLearn”, spaces = [8,13,15]

Output: “Leetcode Helps Me Learn”

Explanation:

The indices 8, 13, and 15 correspond to the underlined characters in “LeetcodeHelpsMeLearn”.

We then place spaces before those characters.

Example 2:

Input: s = “icodeinpython”, spaces = [1,5,7,9]

Output: “i code in py thon”

Explanation:

The indices 1, 5, 7, and 9 correspond to the underlined characters in “icodeinpython”.

We then place spaces before those characters.

Example 3:

Input: s = “spacing”, spaces = [0,1,2,3,4,5,6]

Output: " s p a c i n g"

Explanation: We are also able to place spaces before the first character of the string.

Constraints:

  • 1 <= s.length <= 3 * 105
  • s consists only of lowercase and uppercase English letters.
  • 1 <= spaces.length <= 3 * 105
  • 0 <= spaces[i] <= s.length - 1
  • All the values of spaces are strictly increasing.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    java.lang.String
    addSpaces(java.lang.String string, int[] spaces)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • addSpaces

      public java.lang.String addSpaces(java.lang.String string, int[] spaces)