Key3

Python/program-14/git.py

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+#fibonacci series
+nterms = int(input("How many terms? "))
+
+# first two terms
+n1, n2 = 0, 1
+count = 0
+
+if nterms <= 0:
+   print("Please enter a positive integer")
+elif nterms == 1:
+   print("Fibonacci sequence upto",nterms,":")
+   print(n1)
+else:
+   print("Fibonacci sequence:")
+   while count < nterms:
+       print(n1)
+       nth = n1 + n2
+       # update values
+       n1 = n2
+       n2 = nth
+       count += 1

Python/program-14/readme.md

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+program to print fibonacci series

Python/program-15/git1.py

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+# Program to check if a number is prime or not
+
+num = 407
+
+# To take input from the user
+#num = int(input("Enter a number: "))
+
+# prime numbers are greater than 1
+if num > 1:
+   # check for factors
+   for i in range(2,num):
+       if (num % i) == 0:
+           print(num,"is not a prime number")
+           print(i,"times",num//i,"is",num)
+           break
+   else:
+       print(num,"is a prime number")
+
+# if input number is less than
+# or equal to 1, it is not prime
+else:
+   print(num,"is not a prime number")

Python/program-15/readme.md

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+program to check whether a number is prime or not

Python/program-16/git2.py

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+# Returns index of x in arr if present, else -1 
+def binary_search(arr, low, high, x): 
+
+    # Check base case 
+    if high >= low: 
+
+        mid = (high + low) // 2
+
+        # If element is present at the middle itself 
+        if arr[mid] == x: 
+            return mid 
+
+        # If element is smaller than mid, then it can only 
+        # be present in left subarray 
+        elif arr[mid] > x: 
+            return binary_search(arr, low, mid - 1, x) 
+
+        # Else the element can only be present in right subarray 
+        else: 
+            return binary_search(arr, mid + 1, high, x) 
+
+    else: 
+        # Element is not present in the array 
+        return -1
+
+# Test array 
+arr = [ 2, 3, 4, 10, 40 ] 
+x = 10
+
+# Function call 
+result = binary_search(arr, 0, len(arr)-1, x) 
+
+if result != -1: 
+    print("Element is present at index", str(result)) 
+else: 
+    print("Element is not present in array") 

Python/program-16/readme.md

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+python program for binary search

Python/program-18/git3.py

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+# Python3 program to find simple interest 
+# for given principal amount, time and 
+# rate of interest. 
+
+
+def simple_interest(p,t,r): 
+    print('The principal is', p) 
+    print('The time period is', t) 
+    print('The rate of interest is',r) 
+
+    si = (p * t * r)/100
+
+    print('The Simple Interest is', si) 
+    return si 
+
+# Driver code 
+simple_interest(8, 6, 8) 

Python/program-18/readme.md

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+python program for simple interest