JAVA-------SEM-1 Assignment4

 Q_01

Scanner in = new Scanner(System.in);

int n = 1;

System.out.print("Enter the message: ");

String x = in.next();

while(n <= 10) {

switch(n) {

case 1 :

System.out.println(n + "st " + x);

break;

case 2 :

System.out.println(n + "nd " + x);

break;

case 3 :

System.out.println(n + "rd " + x);

break;

default :

System.out.println(n + "th " + x);

}

n++;

}

Q_02

int n = 1;

int x = Integer.parseInt(args[0]);

System.out.println("The no of lines are: " + x);

while(n <= x) {

switch(n%10) {

case 1 :

System.out.println(n + "st Hello");

break;

case 2 :

System.out.println(n + "nd Hello");

break;

case 3 :

System.out.println(n + "rd Hello");

break;

default :

System.out.println(n + "th Hello");

}

n++;

}

Q_03

Scanner in = new Scanner(System.in);

System.out.print("Count to: ");

int x = in.nextInt();

for(int n = 0 ; n <= x ; n++)

System.out.print(n + " ");

Q_04

Scanner in = new Scanner(System.in);

System.out.print("Count from: ");

int x = in.nextInt();

System.out.print("Count to: ");

int y = in.nextInt();

System.out.print("Count by: ");

int z = in.nextInt();

for(int n = x ; n <= y ; n+= z) {

System.out.print(n + " ");

}

Q_05

for(double n = -2 ; n <= 2 ; n+= 0.5) {

System.out.println(n);

}

Q_06

for(int n = 1001 ; n <= 2000 ; n++) {

System.out.print(n + " ");

if(n%5==0)

System.out.println();

}

Q_07

double sum = 0;

int n = Integer.parseInt(args[0]);

System.out.println("No. of random values to choose: " + n);

for(int x = 0 ; x < n ; x++) {

double ran = Math.random();

System.out.println(ran);

sum += ran;

}

double avg = sum/n;

System.out.println("Average: " + avg);

Q_08

String str = "";

for(int n = 1 ; n <= 5 ; n++) {

str = str + n + str;

System.out.println(str);

}

Q_09

int sum = 0;

int count = 1;

for(int n = 1 ; n < 1000 ; n++)

if((n%3==0)||(n%5==0)) {

sum += n;

}

System.out.println("The sum is: " + sum);

Q_10

Scanner in = new Scanner(System.in);

System.out.print("Table of: ");

int x = in.nextInt();

for(int n = 1 ; n <=10 ; n++) {

int val = x*n;

System.out.println(x + " X " + n + " = " + val);

}

Q_11

double sum1 = 0 , sum2 = 0;

for(int n = 1 ; n <= 100 ; n++) {

sum1 += n;

sum2 += Math.pow(n , 2);

}

sum1 = Math.pow(sum1, 2);

System.out.println("The square of the sum of first 1000 natural no: " + sum1);

System.out.println("The sum of the square of first 1000 natural no: " + sum2);

System.out.println("The difference between them: " + (sum1 - sum2));

Q_12

System.out.println("\t\tLogN\t\tN\t\tNlogN\t\tN^2\t\tN^3\t\t2^N");

for(int n = 16 ; n <= 2048 ; n*=2) {

System.out.println(n + "\t" + Math.log(n) + "\t" + n + "\t"+ (n*Math.log(n)) + "\t" + (Math.pow(n , 2)) + "\t\t" + Math.pow(n, 3) + "\t\t" + Math.pow(2 , n));

}

Q_13

Scanner in = new Scanner(System.in);

System.out.print("Enter the integer: ");

int x = in.nextInt();

int dig , sum = 0;

while(x!=0){

dig = x%10;

System.out.println(dig);

sum += dig;

x /= 10;

}

if(sum%9==0) {

System.out.println("Yes! it is divisible by 9.");

}

else {

System.out.println("No! it is not divisible by 9.");

}

Q_14

double sum = 0;

Scanner in = new Scanner(System.in);

System.out.print("Enter the integer: ");

int x = in.nextInt();

int n;

for(n = 2 ; n<=x ; n = n*2) {

}

System.out.println(n/2);

Q_15

for(int n = 0 ; n < 4 ; n++) {

for(int m = 0 ; m < 5 ; m++)

System.out.print("*");

System.out.println();

}

Q_16_A

for(int n = 1 ; n <= 5 ; n++) {

for(int m = 1 ; m <= n ; m++) {

System.out.print("*");

}

System.out.println();

}

Q_16_B

for(int n = 1 ; n <= 5 ; n++) {

for(int m = 1 ; m <= n ; m++) {

System.out.print(m);

}

System.out.println();

}

Q_16_C

for(int n = 1 ; n <= 5 ; n++) {

for(int m = 1 ; m <= n ; m++) {

System.out.print(n);

}

System.out.println();

}

Q_16_D

int x = 1;

for(int n = 1 ; n <= 5 ; n++) {

for(int m = 1 ; m <= n ; m++) {

System.out.print(x + " ");

x++;

}

System.out.println();

}

Q_17

for(int n = 1 ; n <= 10 ; n++) {

for(int m = 1 ; m <= 10 ; m++) {

if((m%n==0)||(n%m==0))

System.out.print("* ");

else

System.out.print("  ");

}

System.out.print(n);

System.out.println();

}

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