Embed Size (px)
DESCRIPTION
Instrucciones de controlforwhileifelse ifdi while
Citation preview
CeGo.Net----Stone_c35-----FIEE-UNI
1
PROBLEMAS DE JAVA-INSTRUCCIONES DE CONTROL
CeGo.Net----Stone_c35-----FIEE-UNI
2
CeGo.Net----Stone_c35-----FIEE-UNI
3
PROBLEMA 1
PROBLEMA 2
PROBLEMA 3
package javaapplication86;
import java.util.Scanner;
public class Problema3 {
public static void main(String[] args) {
Scanner ob=new Scanner(System.in);
System.out.println("ingrese cunatos numeros requiere");
int suma=0;
int n=ob.nextInt();
for(int i=1;i<=n;i++){
suma =suma+i;
}
System.out.println("total de numeros es: "+suma);
}
}
run:
ingrese cunatos numeros requiere: 12
total de numeros es: 78
BUILD SUCCESSFUL (total time: 1 second)
PROBLEMA 4
package javaapplication87;
import java.util.Scanner;
public class Problema4 {
public static void main(String[] args) {
Scanner ob=new Scanner(System.in);
int m=ob.nextInt();
int suma=0;
for(int i=1;i<=m;i++){
int j=(int)(Math.pow(i, 2));
suma=suma+j;}
System.out.println("suma de cuadrados es: "+suma);
CeGo.Net----Stone_c35-----FIEE-UNI
4
}}
run:
n cuadrados: 7
suma de cuadrados es: 140
BUILD SUCCESSFUL (total time: 6 seconds)
PROBLEMA 5
package javaapplication88;
import java.util.Scanner;
public class Problema5 {
public static void main(String[] args) {
Scanner ob=new Scanner(System.in);
System.out.println("ingrese lado:");
int lado=ob.nextInt();
double total=0;
int depreciar=(int)((2*Math.log(lado*Math.pow(10,10)))/Math.log(2));
for (int i=0;i<=depreciar;i++){
double j=(double)(Math.pow(lado,2)/Math.pow(2,i));
total=total+j;
}System.out.println("total: "+total);
}
}
run:
ingrese lado:
4
total: 32.0
BUILD SUCCESSFUL (total time: 16 seconds)
PROBLEMA 6
package javaapplication89;
import java.util.Scanner;
public class Problema6 {
public static void main(String[] args) {
Scanner ob=new Scanner(System.in);
CeGo.Net----Stone_c35-----FIEE-UNI
5
double lado;
double s;
double dif;
double p=0;
double producto=1;
for(int i=1;i<=3;i++){
System.out.print("lado "+i+": ");
lado=ob.nextDouble();
p=lado+p; }
s=0.5*p;
System.out.println("semiperimtro: "+s);
for(int j=1;j<=3;j++){
System.out.print("lado "+j+": ");
lado=ob.nextDouble();
dif=s-lado;
producto=s*dif; }
System.out.println("area: "+producto); }
}}
run:
lado 1: 3
lado 2: 4
lado 3: 6
semiperimtro: 6.5
lado 1: 3
lado 2: 4
lado 3: 6
area: 3.25
BUILD SUCCESSFUL (total time: 16 seconds)
PROBLEMA 7
CeGo.Net----Stone_c35-----FIEE-UNI
6
package javaapplication90;
import java.util.Scanner;
public class Problema7 {
public static void main(String[] args) {
Scanner ob=new Scanner(System.in);
double lado;
double hipo=0;
for(int i=1;i<=2;i++){
System.out.print("lado "+i+": ");
lado=ob.nextDouble();
hipo=hipo+Math.pow(lado,2);
}
System.out.print("angulo que se opone a: ");
double ladop=ob.nextDouble();
double m=Math.asin(ladop/Math.sqrt(hipo));
System.out.print("el angulo es : "+(m*180)/Math.PI+"y el otro"+(90-(m*180)/Math.PI));
}}
run:
lado 1: 3
lado 2: 4
angulo que se opone a: 4
el angulo es : 53.13010235415598y el otro36.86989764584402
BUILD SUCCESSFUL (total time: 7 seconds)
PROBLEMA 8
PROBLEMA 9
PROBLEMA 10
package javaapplication91;
import java.util.Scanner;
public class Problema10 {
public static void main(String[] args) {
Scanner ob=new Scanner(System.in);
System.out.println("ingrese el numero de minutos ");
int minutos=ob.nextInt();
CeGo.Net----Stone_c35-----FIEE-UNI
7
double monto;
if(minutos<=3){
monto=(double)(0.5*minutos);
System.out.println("Monto: "+monto); }
if(minutos>3){
monto=1.5+(minutos-3)*0.1;
System.out.println("Monto: "+monto);} }}
run:
ingrese el numero de minutos
8
Monto: 2.0
BUILD SUCCESSFUL (total time: 4 seconds)
PROBLEMA 11
package javaapplication92;
import java.util.Scanner;
public class Problema11 {
public static void main(String[] args) {
Scanner ob=new Scanner(System.in);
System.out.println("ingrese el numero1");
int numero1=ob.nextInt();
System.out.println("ingrese el numero2");
int numero2=ob.nextInt();
if(numero1<numero2){
System.out.println("numero1<numero2");}
if(numero1>numero2){
System.out.println("numero1>numero2");}
if(numero1==numero2){
System.out.println("numero1=numero2");}
}
}
run:
ingrese el numero1
45
ingrese el numero2
76
CeGo.Net----Stone_c35-----FIEE-UNI
8
numero1<numero2
BUILD SUCCESSFUL (total time: 10 seconds)
PROBLEMA 12
PROBLEMA 13
package javaapplication93;
import java.util.Scanner;
public class Problema13 {
double a,b,c;
void lectura(double aa,double bb,double cc){
aa=a;bb=b;cc=c;
Scanner ob=new Scanner(System.in);
System.out.println("a*x*x+b*x+c");
System.out.println("ingrese a");
a=ob.nextDouble();
System.out.println("ingrese b");
b=ob.nextDouble();
System.out.println("ingrese c");
c=ob.nextDouble();
}
void evaluar(double a1,double b1,double c1){
a1=a;b1=b;c1=c;
double disc=0.25*(b1*b1-4*a1*c1);
double com=-b1/(2*a1);
if(disc<0){
System.out.println("raices complejas");}
if(disc == 0)
{ double raiz=com+Math.sqrt(disc);
System.out.println("las raices son "+raiz); }
if(disc>0){
double raiz1=com+Math.sqrt(disc);
double raiz2=com-Math.sqrt(disc);
System.out.println("las raices son ("+raiz1+" , "+raiz2+")");
} }
public static void main(String[] args) {
Problema13 obj=new Problema13();
double aa=0,bb=0,cc=0;
CeGo.Net----Stone_c35-----FIEE-UNI
9
obj.lectura(aa, bb, cc);
obj.evaluar(aa, bb, cc);
}
}
run:
a*x*x+b*x+c
ingrese a
2
ingrese b
5
ingrese c
-3
las raices son (2.25 , -4.75)
BUILD SUCCESSFUL (total time: 32 seconds)
PROBLEMA 14
PROBLEMA 15
PROBLEMA 16
package javaapplication94;
import java.util.Scanner;
public class Problema16 {
double lectura(double d){
Scanner obj=new Scanner(System.in);
System.out.print("ingrese valor: ");
d=obj.nextDouble();
return d;}
double funcion(double d){
double f=(d-3)/(d*d-25);
System.out.println("f= "+f);
return f;}
public static void main(String[] args) {
Problema16 prueba=new Problema16();
double d=0;
double dd=prueba.lectura(d);
prueba.funcion(dd);
}}
CeGo.Net----Stone_c35-----FIEE-UNI
10
run:
ingrese valor: 4
f= -0.1111111111111111
BUILD SUCCESSFUL (total time: 1 second)
PROBLEMA 17
package javaapplication95;
import java.util.Scanner;
public class Problema17 {
double x;
void lectura(double xx){
xx=x;
Scanner obj=new Scanner(System.in);
System.out.print("Escribe valor: ");
x=obj.nextDouble();
}
void evaluar(double xx){
xx=x;
double f;
if(xx <= 0){
f=xx+Math.sin(xx);
System.out.println("f: "+f);}
else if(xx <= 8)
{f=2*xx-Math.log(xx);
System.out.println("f: "+f);}
else {
f=Math.log10(xx-8);
System.out.println("f: "+f);}
}
public static void main(String[] args) {
Problema17 prueba=new Problema17();
double x = 0;
prueba.lectura(x);
prueba.evaluar(x);
CeGo.Net----Stone_c35-----FIEE-UNI
11
}
}
run:
Escribe valor: 3
f: 4.90138771133189
BUILD SUCCESSFUL (total time: 7 seconds)
PROBLEMA 18
package javaapplication96;
import java.util.Scanner;
public class Problema18 {
double lado1,lado2,lado3;
void lectura(double l1,double l2,double l3){
l1=lado1;l2=lado2;l3=lado3;
Scanner obj=new Scanner(System.in);
System.out.print("Escriba lado1: ");
lado1=obj.nextDouble();
System.out.print("Escriba lado2: ");
lado2=obj.nextDouble();
System.out.print("Escriba lado3: ");
lado3=obj.nextDouble();
}
void existencia(double L1,double L2,double L3){
L1=lado1;L2=lado2;L3=lado3;
if(Math.abs(L3-L2)<L1&&L1<L3+L2){
if(Math.abs(L3-L1)<L2&&L2<L1+L3){
if(Math.abs(L1-L2)<L3&&L3<L1+L2){
System.out.println("El triangulo si existe");}}}
else{System.out.println("El triangulo no existe");}
}
void tipotri(double L1,double L2,double L3){
L1=lado1;L2=lado2;L3=lado3;
if(L1==L2&&L2==L3){
System.out.println("Equlatero");}
if(L1 != L2 && L2 != L3 && L1!=L3) {
System.out.println("Escaleno");}
else if(L1 != L2 && L2 == L3 || L1 != L3 && L3 == L2 || L2 != L3 && L3 == L1){
CeGo.Net----Stone_c35-----FIEE-UNI
12
System.out.println("isosceles");}
else{System.out.println("isosceles");}
}
public static void main(String[] args) {
Problema18 prueba=new Problema18();
double l1=0,l2=0,l3=0;
prueba.lectura(l1, l2, l3);
prueba.existencia(l1, l2, l3);
prueba.tipotri(l1, l2, l3); }
}
run:
Escriba lado1: 3
Escriba lado2: 4
Escriba lado3: 4
El triangulo si existe
isosceles
BUILD SUCCESSFUL (total time: 4 seconds)
PROBLEMA 19
package javaapplication97;
import java.util.Scanner;
public class Problema19 {
int d,m,a;
void lectura(int dd,int mm,int aa){
dd=d;mm=m;aa=a;
Scanner obj=new Scanner(System.in);
System.out.print("Escriba dia: ");
d=obj.nextInt();
System.out.print("Escriba mes: ");
m=obj.nextInt();
System.out.print("Escriba año: ");
a=obj.nextInt();}
void estacion(int dd,int mm,int aa){
dd=d;mm=m;aa=a;
int cambio=100*mm+dd;
CeGo.Net----Stone_c35-----FIEE-UNI
13
{
if(cambio>=1221){System.out.println("verano");}
else if(cambio>=923){ System.out.println("primavera");}
else if(cambio>=622){System.out.println("invierno");}
else if(cambio>=321){System.out.println("otoño");}
else if(cambio>0){System.out.println("verano");}
}
}
public static void main(String[] args) {
Problema19 prueba=new Problema19();
int d=0,m=0,a=0;
prueba.lectura(d, m, a);
prueba.estacion(d, m, a);
}
}
run:
Escriba dia: 25
Escriba mes: 6
Escriba año: 1980
invierno
BUILD SUCCESSFUL (total time: 11 seconds)
PROBLEMA 20
package javaapplication98;
import java.util.*;
public class Problema20 {
int m,a;
void lectura(int mm,int aa){
mm=m;aa=a;
Scanner obj=new Scanner(System.in);
System.out.print("Escriba mes: ");
m=obj.nextInt();
System.out.print("Escriba año: ");
a=obj.nextInt();}
void evaluar(int mm,int aa){
mm=m;aa=a;
CeGo.Net----Stone_c35-----FIEE-UNI
14
if (aa%400 ==0){
System.out.println("El año es bisiesto");}
else if (aa%100==0){
System.out.println("El año es no bisiesto");}
else if(aa%4==0){
System.out.println("El año es bisiesto");}
else
{System.out.println("El año no es bisiesto");}
System.out.println("El numero de diasndel mes: ");
if(mm==1){System.out.println(31);}
if(mm==2){
if(aa%400 ==0||aa%4==0){
System.out.println(29);}
else if(aa%100==0){
System.out.println(28);}
else{
System.out.println(28);}}
if(mm==3){System.out.println(31);}
if(mm==4){System.out.println(30);}
if(mm==5){System.out.println(31);}
if(mm==6){System.out.println(30);}
if(mm==7){System.out.println(31);}
if(mm==8){System.out.println(31);}
if(mm==9){System.out.println(30);}
if(mm==10){System.out.println(31);}
if(mm==11){System.out.println(30);}
if(mm==12){System.out.println(31);}
}
public static void main(String[] args) {
Problema20 ob=new Problema20();
int m=0;int a=0;
ob.lectura(m, a);
ob.evaluar(m, a);}}
run:
CeGo.Net----Stone_c35-----FIEE-UNI
15
Escriba mes: 10
Escriba año: 2010
El año no es bisiesto
El numero de días del mes:
31
BUILD SUCCESSFUL (total time: 10 seconds)
PROBLEMA 21
package javaapplication99;
import java.util.Scanner;
public class Problema21 {
int d,m,a;
void lectura(int dd,int mm,int aa){
dd=d;mm=m;aa=a;
Scanner obj=new Scanner(System.in);
System.out.print("Escriba dia: ");
d=obj.nextInt();
System.out.print("Escriba mes: ");
m=obj.nextInt();
System.out.print("Escriba año: ");
a=obj.nextInt();}
void evaluar(int dd,int mm,int aa){
dd=d;mm=m;aa=a;
if (aa%400 ==0){
System.out.println("El año es bisiesto");}
else if (aa%100==0){
System.out.println("El año es correcto");}
else if(aa%4==0){
System.out.println("El año es bisiesto");}
else
{System.out.println("El año no es correcto");}
if(mm==1){if(dd<=31);
else System.out.println("dia incorrecto");
if(mm==2){if (aa%400 ==0){if(dd<=29);
else System.out.println("dia incorrecto");}
else if (aa%100==0){
System.out.println("El año es no bisiesto");}
CeGo.Net----Stone_c35-----FIEE-UNI
16
else if(aa%4==0){if(dd<=29);
else System.out.println("dia incorrecto");}
else
{System.out.println("El año no es bisiesto");}}
if(mm==3){if(dd<=31);
else System.out.println("dia incorrecto");}
if(mm==4){if(dd<=30);
else System.out.println("dia incorrecto");}
if(mm==5){if(dd<=31);
else System.out.println("dia incorrecto");}
if(mm==6){if(dd<=30);
else System.out.println("dia incorrecto");}
if(mm==7){if(dd<=31);
else System.out.println("dia incorrecto");}
if(mm==8){if(dd<=31);
else System.out.println("dia incorrecto");}
if(mm==9){if(dd<=30);
else System.out.println("dia incorrecto");}
if(mm==10){if(dd<=31);
else System.out.println("dia incorrecto");}
if(mm==11){if(dd<=30);
else System.out.println("dia incorrecto");}
if(mm==12){if(dd<=31);
else System.out.println("dia incorrecto");}}}
public static void main(String[] args) {
Problema21 ob=new Problema21();
int d=0;int m=0;int a=0;
ob.lectura(d,m, a);
ob.evaluar(d,m, a);}}
run:
Escriba dia: 23
Escriba mes: 9
Escriba año: 2004
El año es bisiesto
CeGo.Net----Stone_c35-----FIEE-UNI
17
BUILD SUCCESSFUL (total time: 14 seconds)
PROBLEMA 22
PROBLEMA 23
package javaapplication100;
import java.util.Scanner;
public class Problema23 {
int a,b;
void lectura(int aa,int bb){
aa=a;bb=b;
Scanner obj=new Scanner(System.in);
System.out.println("ingrese primer numero");
a=obj.nextInt();
System.out.println("ingrese segundo numero");
b=obj.nextInt();
}
void calcula(int aa,int bb){
System.out.println("::::::");
aa=a;bb=b;
int i;
for(i=1;i<aa;i++){
if(aa%i==0){
{if(bb%i==0){
System.out.println(": "+i);
}}}}}
public static void main(String[] args) {
Problema23 ob=new Problema23();
int a=0;int b=0;
ob.lectura(a, b);
ob.calcula(a, b); }}
run:
ingrese primer numero
6
ingrese segundo numero
18
::::::
CeGo.Net----Stone_c35-----FIEE-UNI
18
: 1
: 2
: 3
BUILD SUCCESSFUL (total time: 4 seconds)
PROBLEMA 24
package javaapplication101;
import java.util.Scanner;
public class Problema24 {
int a;
void lectura(int aa){
aa=a;
Scanner obj=new Scanner(System.in);
System.out.println("ingrese numero");
a=obj.nextInt();}
void factorizar(int aa){
aa=a;
int i=2;
while (aa>1){
i=i+1;
if(aa%i==0){
aa=aa/i;
System.out.println(":"+i);
i=1;} } }
public static void main(String[] args) {
Problema24 obj=new Problema24();
int a=0;
obj.lectura(a);
obj.factorizar(a);}}
run:
ingrese numero
45
:3
:3
:5
CeGo.Net----Stone_c35-----FIEE-UNI
19
BUILD SUCCESSFUL (total time: 4 seconds)
PROBLEMA 25
package javaapplication102;
import java.util.Scanner;
public class Problema25 {
int a;
void lectura(int aa){
aa=a;
Scanner obj=new Scanner(System.in);
System.out.println("ingrese numero");
a=obj.nextInt();}
void primo(int aa){
aa=a;
int contador=1;
for(int i=2;i<aa;i++){
if(aa%i==0) {aa=aa/i;
contador=contador +1;}}
if(contador>1)
{ System.out.println("no es primo"); }
else if(contador==1){
System.out.println("es primo");}}
public static void main(String[] args) {
Problema25 obj=new Problema25();
int a=0;
obj.lectura(a);
obj.primo(a); }}
run:
ingrese numero
86
no es primo
BUILD SUCCESSFUL (total time: 5 seconds)
run:
ingrese numero
23
CeGo.Net----Stone_c35-----FIEE-UNI
20
es primo
BUILD SUCCESSFUL (total time: 2 seconds)
PROBLEMA 26
package javaapplication103;
import java.util.Scanner;
public class Problema26 {
int a,b;
void lectura(int aa,int bb){
aa=a;bb=b;
Scanner obj=new Scanner(System.in);
System.out.println("la forma de division es a/b");
System.out.print("ingrese a:");
a=obj.nextInt();
System.out.print("ingrese b:");
b=obj.nextInt();
}
void factorizar(int num1,int num2){
num1=a;num2=b;
int min;
if(num1 < num2){
min = num1;}
else{
min = num2;}
int factor=0;
int a1,b1;
for(int i=1;i<=min;i++){
if(num1 % i == 0 && num2 % i == 0){
factor=i ;}}
a1=num1/factor;
b1=num2/factor;
System.out.println(a+"/"+b+"="+a1+"/"+b1);}
public static void main(String[] args) {
Problema26 obj=new Problema26();
int a=0;int b=0;
CeGo.Net----Stone_c35-----FIEE-UNI
21
obj.lectura(a, b);
obj.factorizar(a, b); }}
run:
la forma de division es a/b
ingrese a:28
ingrese b:64
28/64=7/16
BUILD SUCCESSFUL (total time: 11 seconds)
PROBLEMA 27
package javaapplication104;
import java.util.Scanner;
public class Problema27 {
int a;
void lectura(int aa){
aa=a;
Scanner obj=new Scanner(System.in);
System.out.println("ingrese numero");
a=obj.nextInt();}
void cambio(int aa){
String numcadena;
String numCadena= Integer.toString(aa);
int s=numCadena.length();
System.out.println("El numero de cifras es: "+s);}
public static void main(String[] args) {
Problema27 ob=new Problema27();
int n=0;
ob.lectura(n);
run:
ingrese numero
12345
El numero de cifras es: 5
BUILD SUCCESSFUL (total time: 17 seconds)
CeGo.Net----Stone_c35-----FIEE-UNI
22
PROBLEMA 28
package javaapplication85;
import java.util.Scanner;
public class Problema28 {
public static void main(String[] args) {
// TODO code application logic here
Scanner lector = new Scanner (System.in);
int cifra, numero;
System.out.print("Ingrese una cifra: ");
cifra = lector.nextInt();
for (numero=0; cifra>0; cifra/=10)
numero = numero * 10 + cifra % 10;
System.out.printf("Número: %d\n", numero);
}
}
run:
Ingrese una cifra: 324556
Número: 655423
BUILD SUCCESSFUL (total time: 5 seconds)
PROBLEMA 29
package javaapplication105;
import java.util.Scanner;
public class Problema29 {
int a;
void lectura(int aa){
aa=a;
Scanner obj=new Scanner(System.in);
System.out.print("ingrese numero: ");
a=obj.nextInt();}
void numperfecto(int aa){
aa=a;
int suma=0;
for(int i=2;i<=aa;i++){
if(aa%i==0){
CeGo.Net----Stone_c35-----FIEE-UNI
23
// System.out.println(aa/i);
suma=suma+aa/i;}}
System.out.println("suma de divisores: "+suma);
if(suma==aa){
System.out.println("El numero es perfecto");}
else
System.out.println("El numero no es perfecto");
}
public static void main(String[] args) {
Problema29 obj=new Problema29();
int a=0;
obj.lectura(a);
obj.numperfecto(a);
}
}
run:
ingrese numero: 28
suma de divisores: 28
El numero es perfecto
BUILD SUCCESSFUL (total time: 46 seconds)
PROBLEMA 30
PROBLEMA 31
PROBLEMA 32
package javaapplication106;
import java.util.Scanner;
public class Problema32 {
int a,b;
void lectura(int aa,int bb){
aa=a;bb=b;
Scanner obj=new Scanner(System.in);
System.out.println("ingrese primer numero");
a=obj.nextInt();
System.out.println("ingrese segundo numero");
b=obj.nextInt();
}
void MCD(int aa,int bb){
CeGo.Net----Stone_c35-----FIEE-UNI
24
aa=a;bb=b;
while( aa != bb ) {
if( aa < bb ) {
bb = bb - aa;}
else {
aa = aa - bb; }
}System.out.print("El MCD es: "+aa);
System.out.println();
}
public static void main(String[] args) {
Problema32 obj=new Problema32();
int a=0;int b=0;
obj.lectura(a, b);
obj.MCD(a, b); }
}
run:
ingrese primer numero
48
ingrese segundo numero
54
El MCD es: 6
BUILD SUCCESSFUL (total time: 15 seconds)
PROBLEMA 33
package javaapplication107;
import java.util.Scanner;
public class Problema33 {
int a,b;
void lectura(int aa,int bb){
aa=a;bb=b;
Scanner obj=new Scanner(System.in);
System.out.println("ingrese primer numero");
a=obj.nextInt();
System.out.println("ingrese segundo numero");
b=obj.nextInt();
CeGo.Net----Stone_c35-----FIEE-UNI
25
}
void MCm(int num1,int num2){
num1=a;num2=b;
int min;
if(num1 < num2){
min = num1;}
else{
min = num2;}
int mcd=0;
for(int i=1;i<=min;i++){
if(num1 % i == 0 && num2 % i == 0){
mcd = i;}
}
//cuando se imprime afuera del for me sale el ultimo valor
//que se evaluo y sale el mayor
int mcm=(min*num2)/mcd;
System.out.println(“MCM= ”mcm); }
public static void main(String[] args) {
Problema33 obj=new Problema33();
int a=0;int b=0;
obj.lectura(a, b);
obj.MCm(a, b); }
}
run:
ingrese primer numero
16
ingrese segundo numero
15
MCM= 225
BUILD SUCCESSFUL (total time: 5 seconds)
