Latest DMOJ Comments

jetic -> Shakespeare 1

Wed, 03 Nov 2021 01:14:53 +0000

Here's some python instructions: To test your code, you can read the hamlet text from the file instead of stdin:

raw_hamlet = []
with open("shakespeare-hamlet.txt", "r") as input_file:
    for line in input_file:
        raw_hamlet.append(line)

and when submitting to the OJ, replace the code above with reading from stdin:

raw_hamlet = [input() + "\n"]
while raw_hamlet[-1] != "--------\n":
    raw_hamlet.append(input() + "\n")

Careful, when reading from stdin, the newline symbols will not appear in your str, this is different from using file operations. Please make sure you process the raw input for special symbols as well.

jetic -> String practice 2

Wed, 22 Sep 2021 17:39:56 +0000

Hint:

In Python, to keep reading from stdin until EOF, you can do this:

while True:
    try :
        line = input()
        ...
    except EOFError:
        break

jetic -> String practice 1

Wed, 22 Sep 2021 17:33:21 +0000

In Python, if you have 2 string str1 and str2, and you want to know if str2 is a substring of str1, you can simply use the expression

if str2 in str1:
    print("Is substring")
else:
    print("Not substring")

The expression str2 in str1 will return to you a bool value of either True or False

jetic -> Function practice 8 (Village of the Sorcerer 4)

Tue, 21 Jul 2020 02:31:26 +0000

More sample I/O https://jetic.org/wp-content/uploads/2020/07/p017_more_sample.zip

jetic -> String Splitting

Sun, 19 Jul 2020 16:17:09 +0000

Hint: here's the code for the main programme used in evaluation:

#include <iostream>
#include <iomanip>
#include "lab3p2.h"
using namespace std;

string ans[100];

int main() {
    string instr;

    while (getline(cin, instr)) {
        for (int i=0; i<100; i++)
            ans[i].clear();
        split(instr, ans);
        int i=0;
        while (i < 100) {
            if (ans[i].length() != 0)
                cout << ans[i] << ' ';
            i++;
        }
        cout << endl;
        instr = "";
    }
    return 0;
}

jetic -> String practice 2

Tue, 07 Jul 2020 01:29:51 +0000

Hint:

In C++, to keep reading in a complete line until EOF, you can do this:

string line;
while (getline(cin, line)) {
    // do your stuff
}

jetic -> Function practice 9 (Village of the Sorcerer 5)

Wed, 24 Jun 2020 05:17:08 +0000

All in all, P018 is a lot more difficult for me since the test case designs are much more complicated. The actual solution is not that hard, and if you are me you are looking at around 30 more lines of code.

jetic -> Function practice 9 (Village of the Sorcerer 5)

Wed, 24 Jun 2020 05:12:59 +0000

As the promised hint, this is what I used for the reference programme.

#include <iostream>
using namespace std;
int maps[100][100][100];
// maps[level][x_coordinate][y_coordinate]
int start[100][2];
// the starting position on every map
int houses[100][100];
// the level each house on every map points to.
// houses[level][houseNumber]
// alternatively, use houses[100][100][100] if it makes your life easier
int k, n, m;
int currentMap;
// it is important to know which level/map you are currently on

void drawTree(char a[][100], int x, int y);
void drawHouse(char a[][100], int x, int y);
void printMap(int map[][100], int x, int y);
int checkMove(int map[][100], int x, int y);
void movePlayer(int map[][100], int& x, int& y, int dir);

jetic -> For practice 2

Thu, 28 May 2020 18:51:08 +0000

Consider the following bare-bone code:

#include <cstdio>
int main() {
    int n;
    scanf("%d", &n);
    int a = 1;
    int b = 1;
    int tmp;
    printf("%d\n", a);
    printf("%d\n", b);
    for (...) printf("%d\n", a+b);
    return 0;
}

Can you figure out a way to ONLY modify the for loop condition to solve this task? Please try.