iven an array of N strings, find the longest common prefix among all strings present in the array.Example 1:Input:N = 4arr[] = {geeksforgeeks, geeks, geek, geezer}Output: geeExplanation: "gee" is the longest commonprefix in all the given strings.
Question
iven an array of N strings, find the longest common prefix among all strings present in the array.Example 1:Input:N = 4arr[] = {geeksforgeeks, geeks, geek, geezer}Output: geeExplanation: "gee" is the longest commonprefix in all the given strings.
Solution
Sure, here is a step-by-step solution in Python:
Step 1: Define the function that will find the longest common prefix.
def longestCommonPrefix(arr, n):
Step 2: If the array is empty, return an empty string.
if (n == 0):
return ""
Step 3: If there is only one string, return that string.
if (n == 1):
return arr[0]
Step 4: Sort the array of strings.
arr.sort()
Step 5: Initialize the result as an empty string.
result = ""
Step 6: Find the minimum length from first and last string.
end = min(len(arr[0]), len(arr[n - 1]))
Step 7: Compare characters from first and last string and append to result.
for i in range(end):
if (arr[0][i] == arr[n - 1][i]):
result += (arr[0][i])
else:
break
Step 8: Return the result.
return (result)
Step 9: Test the function with the given example.
arr = ["geeksforgeeks", "geeks", "geek", "geezerSimilar Questions
Strings - Longest Common PrefixGiven the array of strings A, you need to find the longest common string S which is the prefix of all the strings present in the array.For example, you are given an array of two strings S1 and S2.S1 = "abcdefgh"S2 = "abcefgh"Longest common prefix of S1 and S2 is "abc"Note: Assume that there always exists some common prefix among the stringsConstraints:0 <= length of array <= 104Input Format:First line of input contains an integer N representing the size of the arrayNext N lines contains strings of the array A, each in a line.Output Format:Print the longest common prefix of all strings of ASample Test CasesTest Case 1:Expected Output:5programmerprogrammingprogramprogramaticprogramableprogramTest Case 2:Expected Output:4appleapplepieapple tree apple phoneapple
Write a function to find the longest common prefix string amongst an array of strings.If there is no common prefix, return an empty string "". Example 1:Input: strs = ["flower","flow","flight"]Output: "fl"Example 2:Input: strs = ["dog","racecar","car"]Output: ""Explanation: There is no common prefix among the input strings. Constraints:1 <= strs.length <= 2000 <= strs[i].length <= 200strs[i] consists of only lowercase English letters.
Test time left: 41:32Strings - Longest Common PrefixGiven the array of strings A, you need to find the longest common string S which is the prefix of all the strings present in the array.For example, you are given an array of two strings S1 and S2.S1 = "abcdefgh"S2 = "abcefgh"Longest common prefix of S1 and S2 is "abc"Note: Assume that there always exists some common prefix among the stringsConstraints:0 <= length of array <= 104Input Format:First line of input contains an integer N representing the size of the arrayNext N lines contains strings of the array A, each in a line.Output Format:Print the longest common prefix of all strings of ASample Test Cases
Longest Substring Without Repeating Characters
Given two strings text1 and text2, return the length of their longest common subsequence. If there is no common subsequence, return 0.A subsequence of a string is a new string generated from the original string with some characters (can be none) deleted without changing the relative order of the remaining characters.For example, "ace" is a subsequence of "abcde".A common subsequence of two strings is a subsequence that is common to both strings. Example 1:Input: text1 = "abcde", text2 = "ace" Output: 3 Explanation: The longest common subsequence is "ace" and its length is 3.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.