popular pattern programs for coding Interview

Pattern 1

Code for pattern 1

Java

C++

Python

Java

import java.util.*;

public class Main {
  public static void main(String[] args) {
    int i, j, number, n = 6;

    for (i = 1; i < n; i++) {
      number = 1;
      if (i % 2 == 1) {

        for (j = 1; j <= i; j++) {

          System.out.print(j + " ");
          number++;
        }
        System.out.println();
      }
      for (j = 1; j <= i; j++) {

        System.out.print(j + " ");
        number++;
      }
      System.out.println();
    }
  }

}

C++

// Include header file
#include <iostream>
#include <string>
#include <vector>

class Main
{
    public:
    static void main(std::vector<std::string> &args)
    {
        int i;
        int j;
        int number;
        int n = 6;
        for (i = 1; i < n; i++)
        {
            number = 1;
            if (i % 2 == 1)
            {
                for (j = 1; j <= i; j++)
                {
                    std::cout << std::to_string(j) + " ";
                    number++;
                }
                std::cout << std::endl;
            }
            for (j = 1; j <= i; j++)
            {
                std::cout << std::to_string(j) + " ";
                number++;
            }
            std::cout << std::endl;
        }
    }
};
int main(int argc, char **argv){
	std::vector<std::string> parameter(argv + 1, argv + argc);
	Main::main(parameter);
	return 0;
};

Python

class Main :
    @staticmethod
    def main( args) :
        i = 0
        j = 0
        number = 0
        n = 6
        i = 1
        while (i < n) :
            number = 1
            if (i % 2 == 1) :
                j = 1
                while (j <= i) :
                    print(str(j) + " ", end ="")
                    number += 1
                    j += 1
                print()
            j = 1
            while (j <= i) :
                print(str(j) + " ", end ="")
                number += 1
                j += 1
            print()
            i += 1


if __name__=="__main__":
    Main.main([])

Pattern 2

Code for pattern 2

Java

C++

Python

Java

import java.util.*;

public class Main {
  public static void main(String[] args) {
    int i, j, number, n = 6;

    for (i = 5; i >= 1; i--) {
      number = 1;
      if (i % 2 == 1) {

        for (j = 1; j <= i; j++) {

          System.out.print(j + " ");
          number++;
        }
        System.out.println();
      }
      for (j = 1; j <= i; j++) {

        System.out.print(j + " ");
        number++;
      }
      System.out.println();
    }
  }
}

C++

// Include header file
#include <iostream>
#include <string>
#include <vector>

class Main
{
    public:
    static void main(std::vector<std::string> &args)
    {
        int i;
        int j;
        int number;
        int n = 6;
        for (i = 5; i >= 1; i--)
        {
            number = 1;
            if (i % 2 == 1)
            {
                for (j = 1; j <= i; j++)
                {
                    std::cout << std::to_string(j) + " ";
                    number++;
                }
                std::cout << std::endl;
            }
            for (j = 1; j <= i; j++)
            {
                std::cout << std::to_string(j) + " ";
                number++;
            }
            std::cout << std::endl;
        }
    }
};
int main(int argc, char **argv){
	std::vector<std::string> parameter(argv + 1, argv + argc);
	Main::main(parameter);
	return 0;
};

Python

class Main :
    @staticmethod
    def main( args) :
        i = 0
        j = 0
        number = 0
        n = 6
        i = 5
        while (i >= 1) :
            number = 1
            if (i % 2 == 1) :
                j = 1
                while (j <= i) :
                    print(str(j) + " ", end ="")
                    number += 1
                    j += 1
                print()
            j = 1
            while (j <= i) :
                print(str(j) + " ", end ="")
                number += 1
                j += 1
            print()
            i -= 1


if __name__=="__main__":
    Main.main([])

Pattern 3

Code for pattern 3

Java

C++

Python

Java

import java.util.*;

public class Main {
    public static void main(String[] args) {
     for (int i = 0; i <= 5; i++) {
            for (int j = 0; j <= 5; j++) {
                if(j-i<0){
                    if((j+i)%2==0) {
                         System.out.print("1");
                    } else {
                         System.out.print("0");
                    }
                }

                else
                    System.out.print(" ");
            }
            System.out.println();
        }
  }
}

C++

// Include header file
#include <iostream>
#include <string>
#include <vector>

class Main
{
    public:
    static void main(std::vector<std::string> &args)
    {
        for (int i = 0; i <= 5; i++)
        {
            for (int j = 0; j <= 5; j++)
            {
                if (j - i < 0)
                {
                    if ((j + i) % 2 == 0)
                    {
                        std::cout << "1";
                    }
                    else
                    {
                        std::cout << "0";
                    }
                }
                else
                {
                    std::cout << " ";
                }
            }
            std::cout << std::endl;
        }
    }
};
int main(int argc, char **argv){
	std::vector<std::string> parameter(argv + 1, argv + argc);
	Main::main(parameter);
	return 0;
};

Python

class Main :
    @staticmethod
    def main( args) :
        i = 0
        while (i <= 5) :
            j = 0
            while (j <= 5) :
                if (j - i < 0) :
                    if ((j + i) % 2 == 0) :
                        print("1", end ="")
                    else :
                        print("0", end ="")
                else :
                    print(" ", end ="")
                j += 1
            print()
            i += 1


if __name__=="__main__":
    Main.main([])

Pattern 4

Code for pattern 4

Java

C++

Python

Java

import java.util.*;

public class Main {
  public static void main(String[] args) {
    for (int i = 1; i <=5; i++) {
      {
        for (int j = 5; j >=i; j--) {
          System.out.print(j + " ");
        }
        System.out.println();
      }
    }
  }
}

C++

// Include header file
#include <iostream>
#include <string>
#include <vector>

class Main
{
    public:
    static void main(std::vector<std::string> &args)
    {
        for (int i = 1; i <= 5; i++)
        {
            for (int j = 5; j >= i; j--)
            {
                std::cout << std::to_string(j) + " ";
            }
            std::cout << std::endl;
        }
    }
};
int main(int argc, char **argv){
	std::vector<std::string> parameter(argv + 1, argv + argc);
	Main::main(parameter);
	return 0;
};

Python

class Main :
    @staticmethod
    def main( args) :
        i = 1
        while (i <= 5) :
            j = 5
            while (j >= i) :
                print(str(j) + " ", end ="")
                j -= 1
            print()
            i += 1


if __name__=="__main__":
    Main.main([])

Pattern 5

Code for pattern 5

Java

C++

Python

Java

public class Main {
  public static void main(String[] args) {
    for (int i = 1; i <= 5; i++) {
      {
        for (int j = 1; j <= i; j++) {
          if (i % 2 == 1) {
            System.out.print(j + " ");
          } else {
            if (j % 2 == 1) {
              System.out.print("1" + " ");
            } else {
              System.out.print("0" + " ");
            }
          }
        }
        System.out.println();
      }
    }
  }
}

C++

// Include header file
#include <iostream>
#include <string>
#include <vector>

class Main
{
    public:
    static void main(std::vector<std::string> &args)
    {
        for (int i = 1; i <= 5; i++)
        {
            for (int j = 1; j <= i; j++)
            {
                if (i % 2 == 1)
                {
                    std::cout << std::to_string(j) + " ";
                }
                else
                {
                    if (j % 2 == 1)
                    {
                        std::cout << "1 ";
                    }
                    else
                    {
                        std::cout << "0 ";
                    }
                }
            }
            std::cout << std::endl;
        }
    }
};
int main(int argc, char **argv){
	std::vector<std::string> parameter(argv + 1, argv + argc);
	Main::main(parameter);
	return 0;
};

Python

class Main :
    @staticmethod
    def main( args) :
        i = 1
        while (i <= 5) :
            j = 1
            while (j <= i) :
                if (i % 2 == 1) :
                    print(str(j) + " ", end ="")
                else :
                    if (j % 2 == 1) :
                        print("1 ", end ="")
                    else :
                        print("0 ", end ="")
                j += 1
            print()
            i += 1


if __name__=="__main__":
    Main.main([])

Pattern 6

Code for pattern 6

Java

C++

Python

Java

public class Main {
    public static void main(String[] args) {
     int num=10;
        for(int i=1;i<=5;i++)
        {
            for(int j=1;j<=i;j++)
            {
                System.out.print(num+" ");
            }
            System.out.println();
            num--;
        }
  }
}

C++

// Include header file
#include <iostream>
#include <string>
#include <vector>

class Main
{
    public:
    static void main(std::vector<std::string> &args)
    {
        int num = 10;
        for (int i = 1; i <= 5; i++)
        {
            for (int j = 1; j <= i; j++)
            {
                std::cout << std::to_string(num) + " ";
            }
            std::cout << std::endl;
            num--;
        }
    }
};
int main(int argc, char **argv){
	std::vector<std::string> parameter(argv + 1, argv + argc);
	Main::main(parameter);
	return 0;
};

Python

class Main :
    @staticmethod
    def main( args) :
        num = 10
        i = 1
        while (i <= 5) :
            j = 1
            while (j <= i) :
                print(str(num) + " ", end ="")
                j += 1
            print()
            num -= 1
            i += 1


if __name__=="__main__":
    Main.main([])

Pattern 7

O
P P
Q Q Q 
R R R R
S S S S S

Code for pattern 7

Java

C++

Python

Java

public class Main {
  public static void main(String[] args) {
    for (int i = 1; i <= 5; i++) {
      String s = "O";
      if (i > 1) {
        s = String.valueOf((char)('P' + i - 2));
        for (int j = 1; j < i; j++) {
          s += s.charAt(0);
        }
      }
      System.out.println(s);
    }
  }
}

C++

// Include header file
#include <iostream>
#include <string>
#include <vector>

class Main
{
    public:
    static void main(std::vector<std::string> &args)
    {
        for (int i = 1; i <= 5; i++)
        {
            std::string s = "O";
            if (i > 1)
            {
                s = to_string((char)('P' + i - 2));
                for (int j = 1; j < i; j++)
                {
                    s += s[0];
                }
            }
            std::cout << s << std::endl;
        }
    }
};
int main(int argc, char **argv){
	std::vector<std::string> parameter(argv + 1, argv + argc);
	Main::main(parameter);
	return 0;
};

Python

class Main :
    @staticmethod
    def main( args) :
        i = 1
        while (i <= 5) :
            s = "O"
            if (i > 1) :
                s = "".join(chr((ord('P') + i - 2)))
                j = 1
                while (j < i) :
                    s += s[0]
                    j += 1
            print(s)
            i += 1


if __name__=="__main__":
    Main.main([])

Pattern 8

1#

2# 3#

4# 5# 6#

7# 8# 9# 10#

Code for pattern 8

Java

C++

Python

Java

import java.util.*;

public class Main {
    public static void main(String[] args) {
      int count =1;
        for (int i = 0; i < 4; i++) {
            for (int j = 0; j < 54; j++) {
                if(j-i<=0 )
                    System.out.print(count++ +"# ");//
                else
                    System.out.print("");
            }
            System.out.println();
        }
  }
}

C++

// Include header file
#include <iostream>
#include <string>
#include <vector>

class Main
{
    public:
    static void main(std::vector<std::string> &args)
    {
        int count = 1;
        for (int i = 0; i < 4; i++)
        {
            for (int j = 0; j < 54; j++)
            {
                if (j - i <= 0)
                {
                    std::cout << std::to_string(count++) + "# ";
                }
                else
                {
                    std::cout << "";
                }
            }
            std::cout << std::endl;
        }
    }
};
int main(int argc, char **argv){
	std::vector<std::string> parameter(argv + 1, argv + argc);
	Main::main(parameter);
	return 0;
};

Python

class Main :
    @staticmethod
    def main( args) :
        count = 1
        i = 0
        while (i < 4) :
            j = 0
            while (j < 54) :
                if (j - i <= 0) :
                    print(str(count += 1) + "# ", end ="")
                else :
                    print("", end ="")
                j += 1
            print()
            i += 1


if __name__=="__main__":
    Main.main([])

popular pattern programs for coding Interview

Pattern 1

Code for pattern 1

Pattern 2

Code for pattern 2

Pattern 3

Code for pattern 3

Pattern 4

Code for pattern 4

Pattern 5

Code for pattern 5

Pattern 6

Code for pattern 6

Pattern 7

Code for pattern 7

Pattern 8

Code for pattern 8

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200+ Salesforce Developer Interview Questions

Pattern 1

Code for pattern 1

Pattern 2

Code for pattern 2

Pattern 3

Code for pattern 3

Pattern 4

Code for pattern 4

Pattern 5

Code for pattern 5

Pattern 6

Code for pattern 6

Pattern 7

Code for pattern 7

Pattern 8

Code for pattern 8

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200+ Salesforce Developer Interview Questions