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48 changes: 48 additions & 0 deletions String/ZigZagConversion/ZigZag_Conversion.cpp
Original file line number Diff line number Diff line change
@@ -0,0 +1,48 @@
#include<iostream>
#include<vector>
#include<string>
using namespace std;
string convert(string s, int numRows) {
vector<string>v(numRows,"");// for storing the new pattern
int fg=0;//flag for direction
int n=s.size();
for(int i=0;i<n;i++){
if(fg==0){
int count=0;
while(i<n&&count<numRows){
v[count]+=s[i];
i++;
count++;
}
}
else{
int count=numRows-2;
while(i<n && count>0){
v[count]+=s[i];
i++;
count--;
}
}
fg=1-fg;
i--;
}
//forming the final string
string ans="";
for(int i=0;i<numRows;i++){
ans+=v[i];
}
return ans;
}
int main(){
string inputstr;
int numRows;
int testcases;
cin>>testcases;
while(testcases--){
cin>>inputstr;
cin>>numRows;
string a=convert(inputstr,numRows);
cout<<a<<"\n";
}
return 0;
}
48 changes: 48 additions & 0 deletions String/ZigZagConversion/ZigZag_Conversion.cpp~
Original file line number Diff line number Diff line change
@@ -0,0 +1,48 @@
#include<iostream>
#include<vector>
#include<string>
using namespace std;
string convert(string s, int numRows) {
vector<string>v(numRows,"");// for storing the new pattern
int fg=0;//flag for direction
int n=s.size();
for(int i=0;i<n;i++){
if(fg==0){
int count=0;
while(i<n&&count<numRows){
v[count]+=s[i];
i++;
count++;
}
}
else{
int count=numRows-2;
while(i<n && count>0){
v[count]+=s[i];
i++;
count--;
}
}
fg=1-fg;
i--;
}
//forming the final string
string ans="";
for(int i=0;i<numRows;i++){
ans+=v[i];
}
return ans;
}
int main(){
string inputstr;
int numRows;
int testcases;
cin>>testcases;
while(testcases--){
cin>>inputstr;
cin>>numRows;
string a=convert(inputstr,numRows);
cout<<a<<"\n";
}
return 0;
}
11 changes: 11 additions & 0 deletions String/ZigZagConversion/ZigZag_Conversion.txt
Original file line number Diff line number Diff line change
@@ -0,0 +1,11 @@
The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font for better legibility)

P.......A.......H.......N
..A...P...L...S...I...I...G
....Y.......I.......R

And then read line by line: PAHNAPLSIIGYIR

Write the code that will take a string and make this conversion given a number of rows:
string convert(string text, int nRows);
Convert("PAYPALISHIRING", 3) should return "PAHNAPLSIIGYIR"