Programming Solutions

Write a java program to calculate sum of each element of matrix using Random input :  import java.util.Random; import java.util.Scanner; public class SumOfMatrixElement { static Random rx=new Random(); public static void main(String[] args) { System.out.println("Enter a matrix : "); int [][]mat=readmatrix(); dispMat(mat); int sum=sumOfMatrix(mat); System.out.println("Sum of matrix is : "+sum); } static int[][] readmatrix(){ Scanner sc=new Scanner(System.in); System.out.println("Enter Row size and column size :"); int row=sc.nextInt(); int col=sc.nextInt(); int mat[][]=new int[row][col]; System.out.println("Enter Elements in Table : "); for(int i=0;i<row;i++) { for(int j=0;j<col;j++) { mat[i][j]=rx.nextInt(50); } }return mat; } static void dispMat(int mat[][]) {   for(int i=0;i<mat.length;i++) { for(int j=0;j<mat[i].le...

Write a java program to find biggest element from matrix using random input :  import java.util.Random; import java.util.Scanner; public class BiggestElementMatrix { static Random rx=new Random(); public static void main(String[] args) { System.out.println("Enter a matrix : "); int [][]mat=readmatrix(); int big=biggestMatrix(mat); System.out.println("Matrix is "); dispMat(mat); System.out.println("Biggest element is : "+big); } static int[][] readmatrix(){ Scanner sc=new Scanner(System.in); System.out.println("Enter Row size and column size :"); int row=sc.nextInt(); int col=sc.nextInt(); int mat[][]=new int[row][col]; System.out.println("Enter Elements in Table : "); for(int i=0;i<row;i++) { for(int j=0;j<col;j++) { mat[i][j]=rx.nextInt(50); } }return mat; } static int biggestMatrix(int[][] mat) { int temp=0; for(i...

Write a java program to add two matrices :  import java.util.Scanner; public class AddTwoMatrix { public static void main(String[] args) { System.out.println("Enter Read first matrix : "); int[][] a=readmatrix(); System.out.println("Enter second matrix : "); int b[][]=readmatrix(); int res[][]=addMat(a, b); System.out.println("First matrix is : "); dispMat(a); System.out.println("Second matrix is : "); dispMat(b); System.out.println("Result matrix is : "); dispMat(res); }  static int[][] readmatrix(){ Scanner sc=new Scanner(System.in); System.out.println("Enter Row size and column size :"); int row=sc.nextInt(); int col=sc.nextInt(); int mat[][]=new int[row][col]; System.out.println("Enter Elements in Table : "); for(int i=0;i<row;i++) { for(int j=0;j<col;j++) { mat[i][j]=sc.nextInt(); } }return mat; ...

Write a java program to print following pattern: import java.util.Scanner; public class DiamondInsideSqure { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("Enter Row size :"); int n = sc.nextInt(); int states = n, space = 0; for (int i = 0; i < 2 * n-1; i++) { if(i==0) { states=states; space=space; } else if (i <n) { states = states - 1; space = space + 2; } else { states = states + 1; space = space - 2; } for (int j = 0; j < states; j++) { System.out.print("*"); } for (int k = 0; k < space; k++) { System.out.print(" "); } for (int j = 0; j < states; j++) { System.out.print("*"); } System.out.println(); } } }

Write a java program to calculate each word length in sentence : import java.util.Scanner; public class CountCharInEachWord { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("Enter Sentence "); String str = sc.nextLine(); charLength(str); } static void charLength(String str) { for(int i=0;i<str.length();i++) { int k=i; String temp=""; while(i<str.length() && str.charAt(i)!=' ' ) { temp=temp+str.charAt(i); i++; } System.out.println(temp+" Length is "+(i-k)); } } }

Write a java program to change all vowels in Capital and other in small : import java.util.Scanner; public class VowelsIntoCap { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("Enter Sentence "); String str = sc.nextLine(); str = vowelsCap(str); System.out.println("After changing vowels in capital \n" + str); } private static String vowelsCap(String str) { char[] ch = str.toCharArray(); for (int i = 0; i < ch.length; i++) { if (ch[i] == 'a' || ch[i] == 'e' || ch[i] == 'i' || ch[i] == 'o' || ch[i] == 'u') { ch[i] = (char) (ch[i] - 32); } else if (ch[i] >= 'A' && ch[i] <= 'Z') { if ((ch[i] == 'A' || ch[i] == 'E' || ch[i] == 'I' || ch[i] == 'O' || ch[i] == 'U')) ch[i] = (char) (ch[i]); else { ch[i] = (char) (ch[i] + 32); } } else { ...

Write a java program to change first char of every word in initCap :  import java.util.Scanner; public class ConvertWordInitCap { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("Enter Sentence "); String str = sc.nextLine(); System.out.println("Before init Caps"); System.out.println(str); str = intitCaps(str); System.out.println("After init Cap "); System.out.println(str); } private static String intitCaps(String str) { char ch[] = str.toCharArray(); for (int i = 0; i < ch.length; i++) { if (i == 0 && ch[i] != ' ' || (ch[i] != ' ' && ch[i - 1] == ' ')) { if (ch[i] >= 'a' && ch[i] <= 'z') { ch[i] = (char) (ch[i] - 32); } } else { if (ch[i] >= 'A' && ch[i] <= 'Z') { ch[i] = (char) (ch[i] + 32); } ...