Ejercicios de programación en lenguaje java.

1. EJERCICIOS RESUELTOS DE JAVA>> ARITMETICA <<- Hallar A+B-C+100Código:class JavaAritmetica1{ public static void main (String mago []) {int A, B, C;System.out.print (quot;
Inserte A: quot;
);A = Leer.datoInt ();System.out.print (quot;
Inserte B: quot;
);B = Leer.datoInt ();System.out.print (quot;
Inserte C: quot;
);C = Leer.datoInt ();System.out.println (quot;
quot;
+ A + quot;
+ quot;
+ quot;
quot;
+ B + quot;
- quot;
+ C + quot;
+ quot;
+ 100 + quot;
= quot;
+ (A + B - C + 100)); }}Hallar (a-b)(a+b)Código:class JavaAritmetica2{ public static void main (String elMago []) {int a, b;System.out.print (quot;
Inserte valor a: quot;
);a = Leer.datoInt ();System.out.print (quot;
Inserte valor b: quot;
);b = Leer.datoInt ();System.out.println (quot;
(quot;
+ a + quot;
-quot;
+ b + quot;
) quot;
+ quot;
(quot;
+ a + quot;
+quot;
+ b + quot;
) quot;
+ quot;
= quot;
+ ((a - b) * (a + b))); }}Leer un numeo de tres digitos y sumarlosCódigo:class JavaAritmetica3{ public static void main (String elMago []) {int numero, sumDig = 0;System.out.print (quot;
Inserte numero de tres digitos: quot;
);numero = Leer.datoInt ();if (numero <= 100) System.out.println (quot;
ERROR: El numero no tiene 3 digitosquot;
);else{ int aux = numero; //en aux salvamos numero while (numero != 0) {sumDig = sumDig + (numero % 10); //sumamos a sumDig el ultimo digito de numeronumero = numero / 10; //eliminamos el ultimo digito de numero } System.out.println (quot;
La suma de los digitos de quot;
+ aux + quot;
es: quot;
+ sumDig);} }}Dado un numero verificar: - Que tenga dos digitos - Verificar si sus digitos son pares - Promediar sus digitos Código:class JavaAritmetica4{ public static void main (String args []) {int numero;System.out.print (quot;
Inserte un numero de dos digitos pares: quot;
);numero = Leer.datoInt ();int aux = numero;if (numero < 100 && numero > 9){ int d1 = numero % 10; numero = numero / 10; int d2 = numero % 10; if (d1 % 2 == 0 && d2 % 2 == 0)System.out.println (quot;
El promedio de los digitos de: quot;
+ aux + quot;
es: quot;
+ ((d1 + d2) / 2));} }}Dado un numero entero, determinar si es positivo, negativo o nuloCódigo:class JavaAritmetica5{ public static void main (String args []) {int numero;System.out.print (quot;
Inserte un numero: quot;
);numero = Leer.datoInt ();if (numero == 0) System.out.println (quot;
El numero quot;
+ numero + quot;
es NULOquot;
);else{ if (numero < 0)System.out.println (quot;
El numero quot;
+ numero + quot;
es NEGATIVOquot;
); elseSystem.out.println (quot;
El numero quot;
+ numero + quot;
es POSITIVOquot;
);} }}Dados seis numero determinar el menor de ellosCódigo:class JavaAritmetica6{ public static void main (String args []) {int a, b, c, d, e, f;System.out.print (quot;
Inserte num.1: quot;
);a = Leer.datoInt ();System.out.print (quot;
Inserte num.2: quot;
);b = Leer.datoInt ();System.out.print (quot;
Inserte num.3: quot;
);c = Leer.datoInt ();System.out.print (quot;
Inserte num.4: quot;
);d = Leer.datoInt ();System.out.print (quot;
Inserte num.5: quot;
);e = Leer.datoInt ();System.out.print (quot;
Inserte num.6: quot;
);f = Leer.datoInt ();int menor = a;if (b < menor) menor = b;if (c < menor) menor = c;if (d < menor) menor = d;if (e < menor) menor = e;if (f < menor) menor = f;System.out.println (quot;
El menor de:quot;
+ a + quot;
,quot;
+ b + quot;
,quot;
+ c + quot;
,quot;
+ d + quot;
,quot;
+ e + quot;
,quot;
+ f + quot;
,quot;
);System.out.println (quot;
Es: quot;
+ menor); }}<br />>> SERIES <<Generar 5,10,15,20,25,30,...Código:class JavaSeries1{ public static void main (String args []) {int n, c = 1, serie = 5;System.out.print (quot;
Cantidad d terminos: quot;
);n = Leer.datoInt ();while (c <= n){ System.out.print (quot;
,quot;
+ serie); serie += 5; c++;} }}Si n=7 generar 7,6,5,4,3,2,1 Código:class JavaSeries2{ public static void main (String args []) {int n, c = 1;System.out.print (quot;
Cantidad d terminos: quot;
);n = Leer.datoInt ();int serie = n;while (c <= n){ System.out.print (serie + quot;
,quot;
); serie--; c++;} }}<br />>> VECTORES <</*Dado el vector T de tamao n. Si el tamao es par invertir los elementos de la mitad de los elementosEjemplo: v=[1][2][3][4][5][6] v(invertido)=[3][2][1][6][5][4]*/Código:class JavaVectores1{ void llenar (int V [], int d) {for (int i = 1 ; i <= d ; i++){ System.out.print (quot;
Inserte pos.[quot;
+ i + quot;
]: quot;
); V [i] = Leer.datoInt ();} } void mostrar (int V [], int d) {for (int i = 1 ; i <= d ; i++){ System.out.print (quot;
[quot;
+ V [i] + quot;
]quot;
);} } void invierte (int V [], int d) {int aux1;int fin1 = d / 2;for (int i = 1 ; i <= (d / 2) / 2 ; i++){ aux1 = V [i]; V [i] = V [fin1]; V [fin1] = aux1; fin1--;}fin1 = d;for (int j = (d / 2) + 1 ; j <= (d / 2) + 1 ; j++){ aux1 = V [j]; V [j] = V [fin1]; V [fin1] = aux1; fin1--;} } public static void main (String args []) {JavaVectores1 h = new JavaVectores1 ();int V [] = new int [20];System.out.print (quot;
Inserte dimen. del vector: quot;
);int d = Leer.datoInt ();h.llenar (V, d);System.out.println (quot;
VECTOR ORIGINAL: quot;
);h.mostrar (V, d);System.out.println (quot;
VECTOR LUEGO DE LA INVERSION: quot;
);h.invierte (V, d);h.mostrar (V, d); }}/*Dado un polinomio evualuarlo en el punto x (todo en un vector)*/Código:class JavaVectores2{ void llenar (int V [], int d) {for (int i = 1 ; i <= d ; i++){ System.out.print (quot;
Inserte pos.[quot;
+ i + quot;
]: quot;
); V [i] = Leer.datoInt ();} } void mostrar (int V [], int d) {for (int i = 1 ; i <= d ; i++){ System.out.print (quot;
[quot;
+ V [i] + quot;
]quot;
);} } int potencia (int b, int e) {int p = 1;for (int i = 1 ; i <= e ; i++){ p = p * b;}return (p); } void evalua (int V [], int d, int x) {int s = 0;for (int i = 1 ; i <= d ; i += 2){ s = s + (V [i] * potencia (x, V [i + 1]));}System.out.println (quot;
X es igual a: quot;
+ s); } public static void main (String args []) {JavaVectores2 h = new JavaVectores2 ();int V [] = new int [20];System.out.print (quot;
Inserte dimen. del vector: quot;
);int d = Leer.datoInt ();System.out.print (quot;
Inserte valor de (x): quot;
);int x = Leer.datoInt ();h.llenar (V, d);System.out.println (quot;
VECTOR: quot;
);h.mostrar (V, d);h.evalua (V, d, x); }}<br />>> MATRICES <</*Dadas dos matrices A y B intercambiar los minimos de A con los maximos de B*/Código:class JavaMatrices1{ void llenar (int M [] [], int f, int c) {for (int i = 1 ; i <= f ; i++){ for (int j = 1 ; j <= c ; j++) {System.out.print (quot;
Inserte pos[quot;
+ i + quot;
][quot;
+ j + quot;
]: quot;
);M [i] [j] = Leer.datoInt (); }} } void mostrar (int M [] [], int f, int c) {for (int i = 1 ; i <= f ; i++){ System.out.println (); for (int j = 1 ; j <= c ; j++) {System.out.print (quot;
[quot;
+ M [i] [j] + quot;
]quot;
); }} } int menor (int M [] [], int f, int c) {int men = M [1] [1];for (int i = 1 ; i <= f ; i++){ for (int j = 1 ; j <= c ; j++) {if (M [i] [j] < men) men = M [i] [j]; }}return (men); } int maximo (int M [] [], int f, int c) {int max = M [1] [1];for (int i = 1 ; i <= f ; i++){ for (int j = 1 ; j <= c ; j++) {if (M [i] [j] < max) max = M [i] [j]; }}return (max); } void intercambiar (int A [] [], int fa, int ca, int B [] [], int fb, int cb) {int min_a = menor (A, fa, ca);int max_b = maximo (B, fb, cb);//para cambiar los minimos de A con los maximos de Bfor (int i = 1 ; i <= fa ; i++){ for (int j = 1 ; j <= ca ; j++) {if (A [i] [j] == min_a) A [i] [j] = max_b; }}//para intercambiar los maximos de con los minimos de Afor (int i = 1 ; i <= fb ; i++){ for (int j = 1 ; j <= cb ; j++) {if (B [i] [j] == max_b) B [i] [j] = min_a; }} } public static void main (String args []) {JavaMatrices1 h = new JavaMatrices1 ();int A [] [] = new int [20] [20];int B [] [] = new int [20] [20];System.out.print (quot;
Insert filas de A: quot;
);int fa = Leer.datoInt ();System.out.print (quot;
Insert columnas de A: quot;
);int ca = Leer.datoInt ();System.out.print (quot;
Insert filas de B: quot;
);int fb = Leer.datoInt ();System.out.print (quot;
Insert columnas de B: quot;
);int cb = Leer.datoInt ();//lectura de matricesSystem.out.println (quot;
INSERTANDO DATOS EN MATRIS A: quot;
);h.llenar (A, fa, ca);System.out.println (quot;
INSERTANDO DATOS EN MATRIS B: quot;
);h.llenar (B, fb, cb);System.out.println (quot;
MATRICES ORIGINALMENTE INSERTADAS: quot;
);h.mostrar (A, fa, ca);System.out.println ();h.mostrar (B, fb, cb);System.out.println ();//intercambiando elementosh.intercambiar (A, fa, ca, B, fb, cb);System.out.println (quot;
MATRICES DESPUES DEL INTERCAMBIO:quot;
);h.mostrar (A, fa, ca);System.out.println ();h.mostrar (B, fb, cb); }}/*Dada una matris cuadrada invertir su diagonal principal*/Código:class JavaMatrices2{ void llenar (int M [] [], int d) {for (int i = 1 ; i <= d ; i++){ for (int j = 1 ; j <= d ; j++) {System.out.print (quot;
Inserte pos[quot;
+ i + quot;
][quot;
+ j + quot;
]: quot;
);M [i] [j] = Leer.datoInt (); }} } void mostrar (int M [] [], int d) {for (int i = 1 ; i <= d ; i++){ System.out.println (); for (int j = 1 ; j <= d ; j++) {System.out.print (quot;
[quot;
+ M [i] [j] + quot;
]quot;
); }} } void invierte (int M [] [], int d) {int fin = d;for (int i = 1 ; i <= d / 2 ; i++){ int aux = M [i] [i]; M [i] [i] = M [d] [d]; M [d] [d] = aux; fin--;} } public static void main (String args []) {JavaMatrices2 h = new JavaMatrices2 ();int M [] [] = new int [20] [20];System.out.print (quot;
Inserte dimen. de la matris cuadrada: quot;
);int d = Leer.datoInt ();h.llenar (M, d);System.out.print (quot;
MATRIS ORIGINAL: quot;
);h.mostrar (M, d);System.out.print (quot;
MATRIS CON LA DIAGONAL PRINCIPAL INVERTIDA: quot;
);h.invierte (M, d);h.mostrar (M, d); }}/*Dada una matris cuadrada invertir su diagonal secundaria*/Código:class JavaMatrices3{ void llenar (int M [] [], int d) {for (int i = 1 ; i <= d ; i++){ for (int j = 1 ; j <= d ; j++) {System.out.print (quot;
Inserte pos[quot;
+ i + quot;
][quot;
+ j + quot;
]: quot;
);M [i] [j] = Leer.datoInt (); }} } void mostrar (int M [] [], int d) {for (int i = 1 ; i <= d ; i++){ System.out.println (); for (int j = 1 ; j <= d ; j++) {System.out.print (quot;
[quot;
+ M [i] [j] + quot;
]quot;
); }} } void invierte (int M [] [], int d) {int fin = d;for (int i = 1 ; i <= d / 2 ; i++){ int aux = M [i] [d]; M [i] [d] = M [d] [i]; M [d] [i] = aux; fin--;} } public static void main (String args []) {JavaMatrices3 h = new JavaMatrices3 ();int M [] [] = new int [20] [20];System.out.print (quot;
Inserte dimen. de la matris cuadrada: quot;
);int d = Leer.datoInt ();h.llenar (M, d);System.out.print (quot;
MATRIS ORIGINAL: quot;
);h.mostrar (M, d);System.out.print (quot;
MATRIS CON LA DIAGONAL SECUNDARIA INVERTIDA: quot;
);h.invierte (M, d);h.mostrar (M, d); }}/*Dada dos matrices de diferentes tamanios R y S mostrar los elementos comunes de R en S*/Código:class JavaMatrices4{ void llenar (int M [] [], int f, int c) {for (int i = 1 ; i <= f ; i++){ for (int j = 1 ; j <= c ; j++) {System.out.print (quot;
Inserte pos[quot;
+ i + quot;
][quot;
+ j + quot;
]: quot;
);M [i] [j] = Leer.datoInt (); }} } void mostrar (int M [] [], int f, int c) {for (int i = 1 ; i <= f ; i++){ System.out.println (); for (int j = 1 ; j <= c ; j++) {System.out.print (quot;
[quot;
+ M [i] [j] + quot;
]quot;
); }} } void comunes (int R [] [], int fr, int cr, int S [] [], int fs, int cs) {System.out.print (quot;
Los elementos comunes de R en S son: quot;
);for (int i = 1 ; i <= fr ; i++){ for (int j = 1 ; j <= cr ; j++) {for (int k = 1 ; k <= fs ; k++){ for (int l = 1 ; l <= cs ; l++) {if (R [i] [j] == S [k] [l]) System.out.print (quot;
[quot;
+ R [i] [j] + quot;
]quot;
); }} }} } public static void main (String args []) {JavaMatrices4 h = new JavaMatrices4 ();int R [] [] = new int [20] [20];int S [] [] = new int [20] [20];System.out.print (quot;
Inserte filas de R: quot;
);int fr = Leer.datoInt ();System.out.print (quot;
Inserte columnas de R: quot;
);int cr = Leer.datoInt ();System.out.print (quot;
Inserte filas de S: quot;
);int fs = Leer.datoInt ();System.out.print (quot;
Inserte columnas de S: quot;
);int cs = Leer.datoInt ();System.out.print (quot;
LLENANDO MATRIS R: quot;
);h.llenar (R, fr, cr);System.out.print (quot;
LLENANDO MATRIS S: quot;
);h.llenar (S, fs, cs);System.out.print (quot;
LA MATRICES R : quot;
);h.mostrar (R, fr, cr);System.out.print (quot;
LA MATRICES S : quot;
);h.mostrar (S, fs, cs);h.comunes (R, fr, cr, S, fs, cs); }}/*Dada una matris intercambiar los elementos de la primera columna con la ultima columna*/Código:class JavaMatrices5{ void llenar (int M [] [], int f, int c) {for (int i = 1 ; i <= f ; i++){ for (int j = 1 ; j <= c ; j++) {System.out.print (quot;
Inserte pos[quot;
+ i + quot;
][quot;
+ j + quot;
]: quot;
);M [i] [j] = Leer.datoInt (); }} } void mostrar (int M [] [], int f, int c) {for (int i = 1 ; i <= f ; i++){ System.out.println (); for (int j = 1 ; j <= c ; j++) {System.out.print (quot;
[quot;
+ M [i] [j] + quot;
]quot;
); }} } void intercambiar (int M [] [], int f, int c) {for (int i = 1 ; i <= f ; i++){ int aux = M [i] [1]; M [i] [1] = M [i] [c]; M [i] [c] = aux;} } public static void main (String args []) {JavaMatrices5 h = new JavaMatrices5 ();int M [] [] = new int [20] [20];System.out.print (quot;
Inserte filas de la matris: quot;
);int f = Leer.datoInt ();System.out.print (quot;
Inserte columnas de la matris: quot;
);int c = Leer.datoInt ();System.out.print (quot;
LLENANDO MATRIS : quot;
);h.llenar (M, f, c);System.out.print (quot;
LA MATRIS ORIGINAL : quot;
);h.mostrar (M, f, c);System.out.print (quot;
LA MATRICES INTERCAMBIADA : quot;
);h.intercambiar (M, f, c);h.mostrar (M, f, c); }}/* Contar el numero de digitos de cada elemento de una matris */Código:class JavaMatrices6{ void llenar (int M [] [], int f, int c) {for (int i = 1 ; i <= f ; i++){ for (int j = 1 ; j <= c ; j++) {System.out.print (quot;
Inserte pos[quot;
+ i + quot;
][quot;
+ j + quot;
]: quot;
);M [i] [j] = Leer.datoInt (); }} } void mostrar (int M [] [], int f, int c) {for (int i = 1 ; i <= f ; i++){ System.out.println (); for (int j = 1 ; j <= c ; j++) {System.out.print (quot;
[quot;
+ M [i] [j] + quot;
]quot;
); }} } void cuenta (int M [] [], int f, int c) {for (int i = 1 ; i <= f ; i++){ for (int j = 1 ; j <= c ; j++) {System.out.print (quot;
[quot;
+ M [i] [j] + quot;
] tiene: quot;
+ digitos (M [i] [j]) + quot;
digito(s)quot;
); }} } int digitos (int n) {int contador = 0;while (n != 0){ n = n / 10; contador++;}return (contador); } public static void main (String args []) {JavaMatrices6 h = new JavaMatrices6 ();int M [] [] = new int [20] [20];System.out.print (quot;
Inserte filas de la matris: quot;
);int f = Leer.datoInt ();System.out.print (quot;
Inserte columnas de la matris: quot;
);int c = Leer.datoInt ();System.out.print (quot;
LLENANDO MATRIS M: quot;
);h.llenar (M, f, c);System.out.print (quot;
LA MATRIS: quot;
);h.mostrar (M, f, c);System.out.print (quot;
CONTEO DE DIGITOS: quot;
);h.cuenta (M, f, c); }}<br />>> MATRICES Y VECTORES<</*Dada la matrix de m*n y el vector de tamanio n, determinar que columna de la matrises igual al vector*/Código:class JavaMatrisVector2{ void llenarMatris (int M [] [], int f, int c) {for (int i = 1 ; i <= f ; i++){ for (int j = 1 ; j <= c ; j++) {System.out.print (quot;
Inserte pos[quot;
+ i + quot;
][quot;
+ j + quot;
]: quot;
);M [i] [j] = Leer.datoInt (); }} } void mostrarMatris (int M [] [], int f, int c) {for (int i = 1 ; i <= f ; i++){ System.out.println (); for (int j = 1 ; j <= c ; j++) {System.out.print (quot;
[quot;
+ M [i] [j] + quot;
]quot;
); }} } void llenarVector (int V [], int d) {for (int i = 1 ; i <= d ; i++){ System.out.print (quot;
Inserte pos.[quot;
+ i + quot;
]: quot;
); V [i] = Leer.datoInt ();} } void mostrarVector (int V [], int d) {for (int i = 1 ; i <= d ; i++){ System.out.print (quot;
[quot;
+ V [i] + quot;
]quot;
);} } void procedure (int M [] [], int f, int c, int V [], int d) {for (int i = 1 ; i <= f ; i++){ int sw = 1; for (int j = 1 ; j <= c ; j++) {for (int k = 1 ; k <= d ; k++){ if (M [j] [i] != V [k])sw = 0;} } if (sw == 1)System.out.println (quot;
La columna quot;
+ i + quot;
es igual al vectorquot;
);} } public static void main (String args []) {JavaMatrisVector2 h = new JavaMatrisVector2 ();int M [] [] = new int [20] [20];int V [] = new int [20];System.out.print (quot;
Inserte filas de la matris: quot;
);int f = Leer.datoInt ();System.out.print (quot;
Inserte dimension del vector: quot;
);int d = Leer.datoInt ();System.out.print (quot;
LLENANDO MATRIS: quot;
);h.llenarMatris (M, f, d);System.out.print (quot;
LLENANDO EL VECTOR: quot;
);h.llenarVector (V, d);System.out.print (quot;
LA MATRIS: quot;
);h.mostrarMatris (M, f, d);System.out.print (quot;
EL VECTOR: quot;
);h.mostrarVector (V, d);h.procedure (M, f, d, V, d); }}/*Dada una matris Z almacenar en un vector A la suma por sus columnasy en un vector B la suma por sus filas*/Código:class JavaMatrisVector3{ void llenarMatris (int M [] [], int f, int c) {for (int i = 1 ; i <= f ; i++){ for (int j = 1 ; j <= c ; j++) {System.out.print (quot;
Inserte pos[quot;
+ i + quot;
][quot;
+ j + quot;
]: quot;
);M [i] [j] = Leer.datoInt (); }} } void mostrarMatris (int M [] [], int f, int c) {for (int i = 1 ; i <= f ; i++){ System.out.println (); for (int j = 1 ; j <= c ; j++) {System.out.print (quot;
[quot;
+ M [i] [j] + quot;
]quot;
); }} } void mostrarVector (int V [], int d) {for (int i = 1 ; i <= d ; i++){ System.out.print (quot;
[quot;
+ V [i] + quot;
]quot;
);} } void vectorA (int M [] [], int f, int c, int A [], int d) {for (int i = 1 ; i <= f ; i++){ int suma = 0; for (int j = 1 ; j <= c ; j++) {suma = suma + M [j] [i]; } A [i] = suma;} } void vectorB (int M [] [], int f, int c, int B [], int d) {for (int i = 1 ; i <= f ; i++){ int suma = 0; for (int j = 1 ; j <= c ; j++) {suma = suma + M [i] [j]; } B [i] = suma;} } public static void main (String args []) {JavaMatrisVector3 h = new JavaMatrisVector3 ();int Z [] [] = new int [20] [20];int A [] = new int [20];int B [] = new int [20];System.out.print (quot;
Inserte filas de la matris: quot;
);int f = Leer.datoInt ();System.out.print (quot;
Inserte columnas de la matris: quot;
);int c = Leer.datoInt ();System.out.print (quot;
LLENANDO MATRIS: quot;
);h.llenarMatris (Z, f, c);System.out.print (quot;
LA MATRIZ Z: quot;
);h.mostrarMatris (Z, f, c);System.out.println (quot;
SUMA POR COLUMNAS DE LA MATRIS (vector A): quot;
);h.vectorA (Z, f, c, A, c);h.mostrarVector (A, c);System.out.println (quot;
SUMA POR FILAS DE LA MATRIS (vector B): quot;
);h.vectorB (Z, f, c, B, f);h.mostrarVector (B, f); }}<br />Resolver los siguientes ejercicios:1. Crear un vector entero en donde almacene 10 número e imprimir dicho números.2. Crear un vector de tipo cadena que almacene 10 elementos e imprimir la palabra java seguido del número de elemento.3. Crear una aplicación que imprima la siguiente matriz.11 12 13 14 1521 22 23 24 2531 32 33 34 354. Crear la siguiente matriz unidad, como se muestra la gráfica1.0 0.0 0.0 0.00.0 1.0 0.0 0.00.0 0.0 1.0 0.00.0 0.0 0.0 1.05. Crear una aplicación para buscar un número en una matriz, e imprimir la ubicación de dicho número.6. Crear una aplicación que busque el número más grande del array y (a posición que ocupa.7. Crear un vector para cargar 5 numero, e imprimir el mayor, menor, medio y la lista ordenada de menor a mayor<br />