Progress till now

Task/Sumanta Kumar Dutta/Q1.py

@@ -0,0 +1,25 @@
+#Given two strings s and t, return true if t is an anagram of s, and false otherwise.
+#An Anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once.
+
+#Function to arrange the strings in alphabetical order
+def alpha(a):
+    st = ""
+    for i in range(97,123):
+        for j in a:
+            if(j == chr(i)):
+                st = st + j
+    return st
+
+s = input("Enter the string s: ")
+t = input("Enter the string t: ")
+flag = False
+
+if(1<=len(s) and 1<=len(t) and len(s)<=(5*104) and len(t)<=(5*104) and s.isalpha()==True and s.islower()==True and t.isalpha()==True and t.islower()==True):
+    if(len(s)!=len(t)):
+        flag = False
+    else:
+        if(alpha(s)==alpha(t)):
+            flag = True
+    print(flag)
+else:
+    print("Invalid input")

Task/Sumanta Kumar Dutta/Q10.py

@@ -0,0 +1,51 @@
+#Given a 2D integer array matrix, return the transpose of matrix.
+#The transpose of a matrix is the matrix flipped over its main diagonal, switching the matrix's row and column indices.
+
+m = int(input("Enter the number of rows: "))
+n = int(input("Enter the number of columns: "))
+
+if(m<1 or n>1000 or (m*n)>105 or (m*n)<1):
+    print("Invalid input")
+    exit()
+
+#Creating the matrix
+mat = []
+for i in range(m):
+    mat.append([])
+
+#Initializing the matrix with 0s
+for i in range(m):
+    for j in range(n):
+        mat[i].append(j)
+        mat[i][j] = 0
+
+#User input
+print("Enter the elements:-")
+for i in range(m):
+    for j in range(n):
+        ip = int(input("Element: "))
+        if(ip<-109 or ip>109):
+            print("Invalid input")
+            exit()
+        mat[i][j] = ip
+
+#Creating the transpose matrix:-
+trans = []
+for i in range(n):
+    trans.append([])
+
+#Initializing the transpose matrix with 0s
+for i in range(n):
+    for j in range(m):
+        trans[i].append(j)
+        trans[i][j] = 0
+
+#Finding transpose
+for i in range(n):
+    for j in range(m):
+        trans[i][j] = mat[j][i]
+
+print("Input matrix:", end=" ")
+print(mat)
+print("Output matrix:", end=" ")
+print(trans)

Task/Sumanta Kumar Dutta/Q2.py

@@ -0,0 +1,20 @@
+#Suppose you are given a string containing only English alphabets (Uppercase and Lowercase letter both). You have to display the frequency of each character in lexicographical order.
+
+st = input("Enter a string: ")
+chk = "" #Stores all the checked characters
+
+#Uppercase
+for i in range(65,91):
+    for j in st:
+        if(j == chr(i)):
+            if(chk.find(j)==-1):
+                print(j+"-> "+str(st.count(j)))
+                chk = chk + j
+
+#Lowercase
+for i in range(97,123):
+    for j in st:
+        if(j == chr(i)):
+            if(chk.find(j)==-1):
+                print(j+"-> "+str(st.count(j)))
+                chk = chk + j

Task/Sumanta Kumar Dutta/Q3.py

@@ -0,0 +1,24 @@
+#You are given a large integer represented as an integer array digits, where each digits[i] is the ith digit of the integer. The digits are ordered from most significant to least significant in left-to-right order. The large integer does not contain any leading 0's.
+#Increment the large integer by one and return the resulting array of digits.
+
+n = int(input("Enter the number of digits: "))
+number = []
+no = ""
+#Input
+for i in range(n):
+    a = int(input("Enter a digit: "))
+    number.append(a)
+
+#Fetching the number
+for i in number:
+    no = no + str(i)
+num = int(no)
+
+res = num + 1 #Resultant number
+
+#Output
+result = []
+for i in str(res):
+    result.append(int(i))
+
+print(result)

Task/Sumanta Kumar Dutta/Q4.py

@@ -0,0 +1,49 @@
+#Write a Python script to capture video image from a webcam and differentiate objects of black and white colors by drawing bounding boxes around them using OpenCV.
+
+import cv2
+import numpy as np
+
+def checkColour(frame):
+    hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)
+
+    lower_white = np.array([0, 0, 168])
+    upper_white = np.array([172, 111, 255])
+
+    lower_black = np.array([0, 0, 0])
+    upper_black = np.array([360, 255, 50])
+
+    mask_white = cv2.inRange(hsv, lower_white, upper_white)
+    mask_black = cv2.inRange(hsv, lower_black, upper_black)
+
+    return mask_white, mask_black
+
+
+cap = cv2.VideoCapture(0)
+
+while True:
+    flag, frame = cap.read()
+    frame = cv2.flip(frame, 1)
+    if(flag==False):
+        print("No webcam connected!")
+        break
+
+    white_mask, black_mask = checkColour(frame)
+
+    contours_white = cv2.findContours(white_mask, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
+    contours_black = cv2.findContours(black_mask, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
+
+    for contour in contours_white[0]:
+        x, y, w, h = cv2.boundingRect(contour)
+        cv2.rectangle(frame, (x,y), (x+w, y+h), (255,255,255), 2)
+
+    for contour in contours_black[0]:
+        x, y, w, h = cv2.boundingRect(contour)
+        cv2.rectangle(frame, (x,y), (x+w, y+h), (0,0,0), 2)
+
+    cv2.imshow('Video Output', frame)
+
+    if cv2.waitKey(1) == ord('q'):
+        break
+
+cap.release()
+cv2.destroyAllWindows()

Task/Sumanta Kumar Dutta/Q5.py

@@ -0,0 +1,13 @@
+#Implement a program to detect edges in an image using the Canny edge detector in OpenCV.
+
+#Prototype
+import cv2
+
+img = cv2.imread('mango.jpg', 1) #Demo image for testing
+img = cv2.resize(img, (800, 600)) #Resizing our image for convenience
+
+canny = cv2.Canny(img, 100, 200)
+
+cv2.imshow('Image',canny)
+cv2.waitKey(0)
+cv2.destroyAllWindows()

Task/Sumanta Kumar Dutta/Q6.py

@@ -0,0 +1,37 @@
+#Given an array, A, of length N. Find the absolute difference between the smallest and largest prime number in array A.
+
+def isPrime(a):
+    c = 0
+    for i in range(1,a):
+        if(a%i==0):
+            c=c+1
+    if(c==1):
+        return True
+    return False
+
+n = int(input("Enter the length of the array: "))
+number = []
+
+#Input
+for i in range(n):
+    number.append(int(input("Enter a number: ")))
+#Displaying the inputs
+print(n)
+for i in number:
+    print(i, end =" ")
+print()
+
+number.sort()
+for i in number:
+    if(isPrime(i)==True):
+        s = i #Smallest prime number
+        break
+
+number.sort(reverse=True)
+for i in number:
+    if(isPrime(i)==True):
+        l = i #Largest prime number
+        break
+
+diff = int(l)-s
+print(diff)

Task/Sumanta Kumar Dutta/Q7.py

@@ -0,0 +1,35 @@
+#Alfi asked Roy to go shopping with her. Witty Roy came up with a condition. He said, for each product of MRP (Maximum Retail Price) R, she'll have to pay a minimum 
+# of all the prime factors of R and he himself will pay the rest of the amount. Without giving it a second thought Alfi agreed. Now they bought N number of products.
+#You're to find how much money Roy had to pay for each product.
+
+def isPrime(a):
+    c = 0
+    for i in range(1,a):
+        if(a%i==0):
+            c=c+1
+    if(c==1):
+        return True
+    return False
+
+
+N = int(input("Enter the number of products: "))
+
+if(N<2):
+    print("Invalid Input")
+    exit()
+
+R = []
+for i in range(N):
+    ip = int(input("Enter the MRPs: "))
+    if(ip>1000000):
+        print("Invalid Input")
+        exit()
+    R.append(ip)
+
+for i in R:
+    ap = 0
+    for j in range(2,i+1):
+        if(i%j==0 and isPrime(j)==True):
+            ap = j
+            break
+    print(i-ap)

Task/Sumanta Kumar Dutta/Q8.py

@@ -0,0 +1,16 @@
+#Develop a Python program to count the frequency of each element in a list and return it as a dictionary.
+
+n = int(input("Enter the number of elements: "))
+l = []
+for i in range(n):
+    l.append(input("Enter an element: "))
+
+d = {}
+chk = []
+
+for i in l:
+    if(chk.count(i)==0):
+        d[i] = l.count(i)
+        chk.append(i)
+
+print(d)

Task/Sumanta Kumar Dutta/Q9.py

@@ -0,0 +1,30 @@
+#Given a dataset IRIS (CSV file) (download it) and create a dataframe from it. Now change the attributes according to the following information:
+#1- S_length to sepal length
+#2- S_width to sepal width
+#3- P length to petal length
+#4-P_width to petal width
+
+#-Now write a program to find the sum of all lengths of all sepal length in cm.
+#Find the index value of maximum and minimum length from petal lengths.(Hint: you can use predefined functions idmax() and idmin())
+#Note: Number of instances is 150
+
+import pandas as pd
+
+#sepal.length, sepal.width, petal.length, petal.width, variety
+data = pd.read_csv('iris.csv') #Creating a dataframe from the iris.csv file
+data.rename(columns={'sepal.length':'S_length', 'sepal.width':'S_width', 'petal.length':'P_length', 'petal.width':'P_width'}, inplace=True)
+
+#Finding the sum of all sepal length in cm.
+sum = 0.0
+for i in range(150):
+    s_length = float(data.at[i,'S_length'])
+    sum = sum + s_length
+
+print("The sum of all sepal lengths =",end=" ")
+print(sum, end=" cm\n\n")
+
+#Finding the index value of maximum and minimum length from petal lengths
+print("The index value of maximum ",end=" ")
+print(data[['P_length']].idxmax(), end="\n\n")
+print("The index value of minimum ",end=" ")
+print(data[['P_length']].idxmin())