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Expression Add Operators
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Expression Add Operators
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//{ Driver Code Starts
import java.io.*;
import java.util.*;
class GFG {
public static void main(String[] args) throws IOException {
BufferedReader br =
new BufferedReader(new InputStreamReader(System.in));
int t;
t = Integer.parseInt(br.readLine());
while (t-- > 0) {
String S;
S = br.readLine();
int target;
target = Integer.parseInt(br.readLine());
Solution obj = new Solution();
ArrayList<String> res = obj.addOperators(S, target);
Collections.sort(res);
for (String s : res) System.out.print(s + " ");
System.out.println();
}
}
}
// } Driver Code Ends
class Solution {
static void help(String s,int target,int index,ArrayList<String> ans,int value,int pichla,String newString){
if(index==s.length()){
if(value==target){
ans.add(newString);
}
return;
}
String temp= "";
int n = 0;
for(int i=index;i<s.length();i++){
temp+=s.charAt(i);
n=n*10+(s.charAt(i)-'0');
if(index==0){
help(s,target,i+1,ans,n,n,temp);
}
else{
help(s,target,i+1,ans,value+n,n,newString+"+"+temp);
help(s,target,i+1,ans,value-n,-n,newString+"-"+temp);
help(s,target,i+1,ans,value-pichla+pichla*n,pichla*n,newString+"*"+temp);
}
if(s.charAt(index)=='0')break;
}
}
public static ArrayList<String> addOperators(String S, int target) {
// code here
ArrayList<String> ans = new ArrayList<>();
String newString = "";
help(S,target,0,ans,0,0,newString);
return ans;
}
}