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Java program to check if a string contains a substring #120

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Nov 17, 2018
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Nov 17, 2018
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68 changes: 68 additions & 0 deletions programs/C/factorial.c
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Original file line number Diff line number Diff line change
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#include<stdio.h>
int main()
{
int choose = 0, n, i;
unsigned long long factorial = 1;

while (choose !=3){
factorial = 1;

printf("Type number to choose \n 1. factorial \n 2. double factorial \n 3.Exit\n Choice: ");
scanf("%d", &choose);

switch(choose){

case(1):
printf("Enter an integer: ");
scanf("%d",&n);

if (n > 0){
for(i=1; i<=n; ++i)
{
factorial *= i; //n! = n*(n-1)...
}
}
else if( n = 0){
factorial = 1; //0!=1;
}
else // show error if the user enters a negative integer
{
printf("Error! Factorial of a negative number doesn't exist.");
}
printf(" %d!= %llu\n", n, factorial);

break;

case(2):
printf("Enter an integer: ");
scanf("%d",&n);

if (n > 0){
for(i=n; i>=1; i-=2)
{
factorial *= i; //n! = n*(n-1)...
}
}
else if( n = 0){
factorial = 1; //0!=1;
}
else // show error if the user enters a negative integer
{
printf("Error! Double Factorial of a negative number doesn't exist.");
}
printf(" %d!!= %llu\n", n, factorial);

break;

case(3):
printf("Good bye!\n");

break;

default:
printf("Invalid number, please choose again.");
}

}
return 0;
}
27 changes: 27 additions & 0 deletions programs/Java/substring_string.java
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package substring;

import java.util.Scanner;

public class substring_string {
public static void main(String[] args) {

String stringis, substringis;
char option;
Scanner input = new Scanner(System.in);

System.out.print("Please intput a string: ");
stringis = input.nextLine();

System.out.print("Please intput a substring: ");
substringis = input.nextLine();

if (stringis.contains(substringis)) {
System.out.println(stringis + " contains " + substringis);
}
else {
System.out.println("Result no found!");
}

System.out.println("Good bye!");
}
}