BASIC PROGRAMMING CONSTRUCTS
252 programming challenges to help you master the fundamentals of CORE JAVA PROGRAMMING.
1
Write a Java program to print ‘Hello World!’ on screen
2
Write a Java program to print the sum of two numbers
3
Write a Java program that takes two numbers and display the product of two numbers
4
Write a Java program to print the sum, multiply, subtract, divide and remainder of two numbers
5
Write a Java program that takes five numbers as input to calculate and print the average of the numbers
6
Write a Java program to swap two variables
7
Write a Java program to convert a decimal number to binary numbers
8
Write a Java program to convert a binary number to decimal number
9
Write a Java program to check whether Java is installed on your computer or not
10
Write a Java program and compute the sum of the digits of an integer
11
Write a Java program to compare two numbers
12
Write a Java program to count the letters, spaces, numbers and other characters of an input string
13
Write a Java program to print the ascii value of a given character
14
Write a Java program that accepts an integer (n) and computes the value of n+nn+nnn
15
Write a Java program to display the system time
16
Write a Java program to print the odd numbers from 1 to 20
17
Write a Java program to print the even numbers from 1 to 20
18
Write a Java program to convert a string to an integer
19
Write a Java program to convert seconds to hour, minute and seconds
20
Write a Java program to compute the sum of the first 100 prime numbers
21
Write a Java program to swap the first and last elements of an array and create a new array
22
Write a Java program to count the number of even and odd elements in a given array
23
Write a Java program to compute the square root of an given integer
24
Write a Java program to check if a positive number is a palindrome or not
25
Write a Java program to add two numbers without using any arithmetic operators
26
Write a Java program to add all the digits of a given positive integer
27
Java program to find area of circle
28
Java Program to find area of rectangle
29
Java Program to find area of triangle
30
Java Program to find area of equilateral triangle
31
Java Program to find area of rhombus
32
Java Program to find area of parallelogram
33
Java Program to find area of Prism
34
Java Program to find volume of sphere
35
Java Program to find volume of cylinder
36
Java Program to find volume of cuboid
37
Java Program to find volume of cone
38
Java program to find surface area of cuboid
39
Java program to find surface area of cylinder
40
Java program to find surface area of cube
41
Java program to calculate average marks
42
Java program to check vowel or consonant
43
Java program to sum of N numbers
44
Java program to find factorial of any number
45
Java Program to calculate electricity bill
46
Java Program To Calculate CGPA Percentage
47
Java Program to calculate compound interest
48
Java Program To Calculate Batting Average
49
Java Pogram to Calculate Commission Percentage
50
Java Pogram To Find Distance Between Two Points
51
Java Program To Calculate Power Of Number
52
Write a Java program to take three numbers from the user and print the greatest number
53
Write a Java program to find the number of days in a month
54
Write a Java program to test a number is positive or negative
55
Write a Java Program to accept number of week’s day (1-7) and print name of the day
56
Write a Java program that takes a year from user and print whether that year is a leap year or not
57
Write a Java program to input 5 numbers from keyboard and find their sum and average
58
Write a program in Java to display the first 5 natural numbers
59
Write a java program to check vowel or consonant
60
Write a Java program to display the cube of the number upto given an integer
61
Write a Java program to display the n terms of odd natural number and their sum
62
Write a Java program to display the multiplication table of a given integer
63
Write a Java program that reads an integer and check whether it is negative, zero, or positive
64
Write a Java program that reads an positive integer and count the number of digits
65
Write a Java program that accepts three numbers and check All numbers are equal or not
66
Write a java program that accepts three numbers from the user and check if numbers are in “increasing” or “decreasing” order.
67
Write a Java program that determines a student’s grade
68
Write a Java program to create a simple calculator
69
Write a Java program to concatenate two string
70
Write a Java program to convert all characters in a string to lowercase
71
Write a Java program to convert all characters in a string to uppercase
72
Write a Java program to trim a string(remove whitespaces)
73
Write a Java program to get a substring of a given string between two specified positions
74
Write a Java program to replace all the ‘d’ characters with ‘f’ characters
75
Write a java program to get the length of a given string
76
Write a java program to print current date and time in the specified format
77
Write a Java program to get the character at the given index within the String
78
Write a java program to remove a particular character from a string
79
Write a java program to reverse a String
80
Write a java program to remove html tags from a string
81
Write a java program to count total number of lines from a string
82
Write a Java program to sum values of an array
83
Write a Java program to find the index of an array element
84
Write a Java program to calculate the average value of array elements
85
Write a Java program to test if an array contains a specific value
86
Write a Java program to find the maximum and minimum value of an array
87
Write a Java program to insert an element (specific position) into an array
88
Write a Java program to reverse an array of integer values
89
Write a Java program to find the common elements between two arrays
90
Write a Java program to find the duplicate values of an array of integer values
91
Write a Java program to convert an array to ArrayList
92
Write a Java program to add two matrices of the same size
93
Write a Java program to find second largest number from the array
94
Write a Java program to find second lowest number from the array
95
Write a Java program to find the number of even and odd integers in a given array of integers
96
Write a Java program to get the difference between the largest and smallest values in an array of integers
97
Write a Java program to segregate all 0s on left side and all 1s on right side of a given array of 0s and 1s
98
Write a Java program to cyclically rotate a given array clockwise by one
99
java program to print all unique element in an array
100
Write a Java Program to Sort the Array in an Ascending Order
101
Write a Java Program to Sort the Array in an Descending Order
102
Write a Java Program to Sort Names in an Alphabetical Order
103
Write a Java Program to Display Transpose Matrix
104
Write a Java Program to Search Key Elements in an Array
105
Write a Java Program to Accept the Marks of a Student and find Total Marks and Percentage
106
Write a java program to print numbers from 1 to 10 using loop
107
Write a java program to calculate the sum of first 10 natural number using loop
108
Write a Java program to print multiplication table of given number
109
Write a Java program to find the factorial value of any number entered through the keyboard
110
Write a Java program that prompts the user to input an integer and then outputs the number with the digits reversed order
111
Write a Java program that reads a set of integers, and then prints the sum of the even and odd integers using loop
112
Write a Java program to check whether the number is a prime number or not
113
Write a Java program to calculate HCF of Two given numbers using loop
114
Write a Java program to enter the numbers till the user wants and at the end it should display the count of positive, negative and zeros
115
Write a Java program to enter the numbers till the user wants and at the end the program should display the largest and smallest numbers entered
116
Write a Java program to print out all Armstrong numbers between 1 to 600 using loop
117
Write a java program to count total number of notes in entered amount using loop
118
Write a Java program to print Fibonacci series of n terms where n is input by user using loop
119
Write a java program to calculate the sum of following series where n is input by user
120
Write a Java method to compute the average of three numbers
121
Write a Java method to find the smallest number among three numbers
122
Write a Java method to count all words in a string
123
Write a Java method to count all vowels in a string
124
Write a Java method to compute the sum of the digits in an integer
125
Write a Java method to check whether an year entered by the user is a leap year or not
126
Write a Java method to calculate the area of a triangle
127
Write a Java method to find the area of a pentagon
128
Write a Java method to find number is even number or not
129
Write a Java method to check numbers is palindrome number or not
130
Write a Java method to displays prime numbers between 1 to 20
131
Write a Java method to find GCD and LCM of Two Numbers
132
Write a Java method to find factorial using recursion in java
133
Write a Java program to reverse an integer number
134
Write a Java program to round a float number to specified decimals
135
Write a Java program to test if a double number is an integer
136
Write a Java program to round up the result of integer division
137
Write a Java program to convert Roman number to an integer number
138
Write a Java program to convert a float value to absolute value
139
Write a Java program to accept a float value of number and return a rounded float value
140
Write a C++ program to print ‘Hello World!’ on screen
141
Write a C++ program to print the sum of two numbers
142
Write a C++ program that takes two numbers and display the product of two numbers
143
Write a C++ program to print the sum, multiply, subtract, divide and remainder of two numbers
144
Write a C++ program that takes five numbers as input to calculate and print the average of the numbers
145
Write a C++ program to swap two variables
146
Write a C++ program to convert a decimal number to binary numbers
147
Write a C++ program to convert a binary number to decimal number
148
Write a C++ program to check whether C++ is installed on your computer or not
149
Write a C++ program and compute the sum of the digits of an integer
150
Write a C++ program to compare two numbers
151
Write a C++ program to count the letters, spaces, numbers and other characters of an input string
152
Write a C++ program to print the ascii value of a given character
153
Write a C++ program that accepts an integer (n) and computes the value of n+nn+nnn
154
Write a C++ program to display the system time
155
Write a C++ program to print the odd numbers from 1 to 20
156
Write a C++ program to print the even numbers from 1 to 20
157
Write a C++ program to convert a string to an integer
158
Write a C++ program to convert seconds to hour, minute and seconds
159
Write a C++ program to compute the sum of the first 100 prime numbers
160
Write a C++ program to compute the square root of an given integer
161
Write a C++ program to check if a positive number is a palindrome or not
162
Write a C++ program to add two numbers without using any arithmetic operators
163
Write a C++ program to add all the digits of a given positive integer
164
C++ program to find area of circle
165
C++ Program to find area of rectangle
166
C++ Program to find area of triangle
167
C++ Program to find area of equilateral triangle
168
C++ Program to find area of rhombus
169
C++ Program to find area of parallelogram
170
C++ Program to find area of Prism
171
C++ Program to find volume of sphere
172
C++ Program to find volume of cylinder
173
C++ Program to find volume of cuboid
174
C++ Program to find volume of cone
175
C++ program to find surface area of cuboid
176
C++ program to find surface area of cylinder
177
C++ program to find surface area of cube
178
C++ program to calculate average marks
179
C++ program to check vowel or consonant
180
C++ program to sum of N numbers
181
C++ program to find factorial of any number
182
C++ Program to calculate electricity bill
183
C++ Program To Calculate CGPA Percentage
184
C++ Program to calculate compound interest
185
C++ Program To Calculate Batting Average
186
C++ Program to Calculate Commission Percentage
187
C++ Program To Find Distance Between Two Points
188
C++ Program To Calculate Power Of Number
189
Write a C++ program to take three numbers from the user and print the greatest number
190
Write a C++ program to find the number of days in a month
191
Write a C++ program to test a number is positive or negative
192
Write a C++ Program to accept number of week’s day (1-7) and print name of the day
193
Write a C++ program that takes a year from user and print whether that year is a leap year or not
194
Write a C++ program to input 5 numbers from keyboard and find their sum and average
195
Write a program in C++ to display the first 5 natural numbers
196
Write a C++ program to check vowel or consonant
197
Write a C++ program to display the cube of the number upto given an integer
198
Write a C++ program to display the n terms of odd natural number and their sum
199
Write a C++ program to display the multiplication table of a given integer
200
Write a C++ program that reads an integer and check whether it is negative, zero, or positive
201
Write a C++ program that reads an positive integer and count the number of digits
202
Write a C++ program that accepts three numbers and check All numbers are equal or not
203
Write a C++ program that accepts three numbers from the user and check if numbers are in "increasing” or “decreasing” order.
204
Write a C++ program that determines a student’s grade (81-100 : A, 61-80 : B, 41-60 : C, 0-40 : D)
205
Write a C++ program to create a simple calculator (1. ADDITION, 2. SUBTRACTION, 3. MULTIPLICATION, 4. DIVISION, 5. EXPONENTIAL, 6. PERCENTAGE, 7. EXIT)
206
Write a C++ program to concatenate two string
207
Write a C++ program to convert all characters in a string to lowercase
208
Write a C++ program to convert all characters in a string to uppercase
209
Write a C++ program to trim a string (remove whitespaces)
210
Write a C++ program to get a substring of a given string between two specified positions
211
Write a C++ program to replace all the ‘d’ characters with ‘f’ characters
212
Write a C++ program to get the length of a given string
213
Write a C++ program to print current date and time in the specified format
214
Write a C++ program to get the character at the given index within the String
215
Write a C++ program to remove a particular character from a string
216
Write a C++ program to reverse a String
217
Write a C++ program to remove html tags from a string
218
Write a C++ program to count total number of lines from a string
219
Write a C++ Program to Accept the Marks of a Student and find Total Marks and Percentage
220
Write a C++ program to print numbers from 1 to 10 using loop
221
Write a C++ program to calculate the sum of first 10 natural number using loop
222
Write a C++ program to print multiplication table of given number
223
Write a C++ program to find the factorial value of any number entered through the keyboard
224
Write a C++ program that prompts the user to input an integer and then outputs the number with the digits reversed order
225
Write a C++ program that reads a set of integers, and then prints the sum of the even and odd integers using loop
226
Write a C++ program to check whether the number is a prime number or not
227
Write a C++ program to calculate HCF of Two given numbers using loop
228
Write a C++ program to enter the numbers till the user wants and at the end it should display the count of positive, negative and zeros
229
Write a C++ program to enter the numbers till the user wants and at the end the program should display the largest and smallest numbers entered
230
Write a C++ program to print out all Armstrong numbers between 1 to 600 using loop
231
Write a C++ program to count total number of notes in entered amount using loop
232
Write a C++ program to print Fibonacci series of n terms where n is input by user using loop
233
Write a C++ program to calculate the sum of following series where n is input by user
234
Write a C++ method to compute the average of three numbers
235
Write a C++ method to find the smallest number among three numbers
236
Write a C++ method to check whether an year entered by the user is a leap year or not
237
Write a C++ program to accept a float value of number and return a rounded float value
238
Write a C++ method to compute the sum of the digits in an integer
239
Write a C++ method to calculate the area of a triangle
240
Write a C++ method to find the area of a pentagon
241
Write a C++ method to find number is even number or not
242
Write a C++ method to check numbers is palindrome number or not
243
Write a C++ method to displays prime numbers between 1 to 20
244
Write a C++ method to find GCD and LCM of Two Numbers
245
Write a C++ method to find factorial using recursion
246
Write a C++ program to reverse an integer number
247
Write a C++ program to round a float number to specified decimals
248
Write a C++ program to test if a double number is an integer
249
Write a C++ program to round up the result of integer division
250
Write a C++ program to convert Roman number to an integer number
251
Write a C++ program to convert a float value to absolute value
252