Q1: You have been given an Array of Strings and you have to find out which string occurrence is maximum. If there is a tie then take the last string.

For eg: input = {cat, dog, lion, cat, lion, dog, hen, cat, dog}
then output = dog

Q2: You have been given a error log file and you have to output the ERROR logs in between any two dates of the month.

Q3: you have been given a text file:
a) replace word Amazon with Andy in first 50 lines.
b) replace word Amazon with Andy from 50th line till the last line.

Q4: You have been given a table name world where you would have to output from table city if city is not null else output the table country.

Question

Q1: You have been given an Array of Strings and you have to find out which string occurrence is maximum. If there is a tie then take the last string.

For eg: input = {cat, dog, lion, cat, lion, dog, hen, cat, dog}
then output = dog

Q2: You have been given a error log file and you have to output the ERROR logs in between any two dates of the month.

Q3: you have been given a text file:
a) replace word Amazon with Andy in first 50 lines.
b) replace word Amazon with Andy from 50th line till the last line.

Q4: You have been given a table name world where you would have to output from table city if city is not null else output the table country.

Vikash Kumar, youtube channel: https://www.youtube.com/edumania1 · Accepted Answer

Q2: You have been given a error log file and you have to output the ERROR logs in between any two dates of the month.

$cat file_name | grep "error" | sed -n '/pattern1/ , /pattern2/p' 

eg: cat abc.log | grep "ERROR" | sed -n '/Oct 13 10:10:10/ , /Oct 15 11:11:11/p'

I hope it helps.

Vikash Kumar, YouTube channel: https://www.yooutube.com/edumania1 · Answer

Q3: you have been given a text file:
a) replace word Amazon with Andy in first 50 lines.
b) replace word Amazon with Andy from 50th line till the last line.

a.
$ head -50 file_name | sed 's/Amazon/Andy/' > new_file_Name  file_path

b. 
$ tail -n +50 file_name | sed 's/Amazon/Andy/' >>  new_file_Name  file_path

Vikash Kumar · Answer

Q1. You have been given an Array of Strings and you have to find out which string occurrence is maximum. If there is a tie then take the last string.

For eg: input = {cat, dog, lion, cat, lion, dog, hen, cat, dog}
then output = dog

Code: 
#include
using namespace std;
int main()
{
    string input[] = {"cat", "dog", "lion", "cat", "lion", "dog", "hen", "cat", "dog"};
    int n= sizeof(input) / sizeof(input[0]);
    int freq=0;
    string res;
    for(int i=0; i= freq)
           {
                  res=input[i];
                  freq= count;
           }
    } //end of i loop
cout<<"Element is: " <

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