over write file y or n shell script code example
Example 1: You will be provided a file path for input I, a file path for output O, a string S, and a string T. Read the contents of I, replacing each occurrence of S with T and write the resulting information to file O. You should replace O if it already exists.
file1 = open(I, 'r')
Icontent = file1.read()
editedData = Icontent.replace(S, T)
file2 = open(O, 'w')
file2.write(editedData)
file1.close()
file2.close()
Example 2: how to calculate min, max and average and write the output into into a text file in java
package TrialPrograms;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.HashSet;
import java.util.Set;
import java.util.TreeSet;
public class Test {
public static void main(String[] args) throws IOException {
FileInputStream fi = new FileInputStream("F:\\Test\\file.txt");
FileOutputStream fo = new FileOutputStream("F:\\Test\\output.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(fi));
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(fo));
String strLine;
while ((strLine = br.readLine()) != null) {
String[] arr = strLine.split(" ");
String[] nos = arr[1].split(",");
Set<Integer> set = new HashSet<Integer>();
for(int i = 0; i<nos.length; i++){
int no = Integer.parseInt(nos[i]);
set.add(no);
}
TreeSet<Integer> sortedSet = new TreeSet<Integer>(set);
switch(arr[0]) {
case "Min:":
String msg1="The Min of [" +arr[1]+ "] is " +(Integer)sortedSet.first();
bw.write(msg1);
bw.newLine();
break;
case "Max:":
String msg2="The Max of [" +arr[1]+ "] is " +(Integer)sortedSet.last();
bw.write(msg2);
bw.newLine();
break;
case "Avg:":
Object[] noarray = sortedSet.toArray();
int noarraysize = noarray.length-1;
int sum=0;
for(int i=0;i<=noarraysize;i++) {
int no=Integer.valueOf(noarray[i].toString());
sum = sum + no;
if(i==noarraysize) {
String msg3="The Avg of [" +arr[1]+ "] is " +(double)sum/noarray.length;
bw.write(msg3);
bw.newLine();
}
}
break;
case "Sum:":
Object[] noarray1 = sortedSet.toArray();
int noarraysize1 = noarray1.length-1;
int sum1=0;
for(int i=0;i<=noarraysize1;i++) {
int no=Integer.valueOf(noarray1[i].toString());
sum1 = sum1 + no;
if(i==noarraysize1) {
String msg4="The Sum of [" +arr[1]+ "] is " +sum1;
bw.write(msg4);
bw.newLine();
}
}
break;
}
}
br.close();
bw.close();
}
}