# Status Problem Level Completes Likes 106 Reverse the given String using Stack Beginner % 0 107 Bubble Sort and Optimized Bubble Sort- Java Implementation Beginner % 1 108 Find the Area of Triangle using base and height - Java Program Beginner % 0 109 Calculate Log2n without using built-in function Beginner % 1 110 Print First N Prime Numbers - Java Code Beginner % 0 111 Print My IP Address – Java Code Beginner % 0 112 Find the Circumference of a Circle - Java Program Beginner % 0 113 Check if two Strings are equal without using built-in function - Java Beginner % 0 114 Remove Vowels from a given String Beginner % 0 115 Linear Search Algorithm Beginner % 0 116 Floyd’s Triangle – Java Implementation Beginner % 0 117 Print Numbers from 1 to N without using loop Beginner % 0 118 Java Program to determine if Given Year is Leap Year Beginner % 0 119 Find the Area of a Circle - Java Program Beginner % 0 120 Fizz Buzz Challenge - Java Implementation Beginner % 0 121 Divide with power of 2 without using pow() or / operator Beginner % 1 122 Maximum Difference between two elements in array – Largest Gap Problem Beginner % 0 123 Minimum number of guesses needed to find a specific number Beginner % 0 124 Left Shift (<<) and Right Shift (>>) Operators Beginner % 1 125 Find the Area of a Triangle Using coordinates Beginner % 0 126 Java Program to find if Triangle can be formed using given 3 sides Beginner % 0 127 Convert Number to base 3 String Representation Beginner % 1 128 Find the Area of a Triangle Given Three Sides – Heron’s Formula Beginner % 0 129 Find Factorial of a given Number Beginner % 0 130 Reverse a String using Recursion Beginner % 0 131 Find Sum of all Digits of a Number Beginner % 0 132 Print maximum occurring character in a String Beginner % 0 133 Weighted Graph Implementation – JAVA Beginner % 1 134 Graph – Depth First Search using Recursion Beginner % 1 135 Graph Implementation – Adjacency Matrix | Set 3 Beginner % 1 136 Java Pair Class Beginner % 0 137 Graph Implementation – Adjacency List - Better| Set 2 Beginner % 0 138 Deque Implementation – Java Beginner % 0 139 Nuts & Bolts Problem (Lock & Key problem) Beginner % 0 140 Number of bit to be flipped to convert one number to another. Beginner % 1 Reverse the given String using Stack Bubble Sort and Optimized Bubble Sort- Java Implementation Find the Area of Triangle using base and height - Java Program Calculate Log2n without using built-in function Print First N Prime Numbers - Java Code Print My IP Address – Java Code Find the Circumference of a Circle - Java Program Check if two Strings are equal without using built-in function - Java Remove Vowels from a given String Linear Search Algorithm Floyd’s Triangle – Java Implementation Print Numbers from 1 to N without using loop Java Program to determine if Given Year is Leap Year Find the Area of a Circle - Java Program Fizz Buzz Challenge - Java Implementation Divide with power of 2 without using pow() or / operator Maximum Difference between two elements in array – Largest Gap Problem Minimum number of guesses needed to find a specific number Left Shift (<<) and Right Shift (>>) Operators Find the Area of a Triangle Using coordinates Java Program to find if Triangle can be formed using given 3 sides Convert Number to base 3 String Representation Find the Area of a Triangle Given Three Sides – Heron’s Formula Find Factorial of a given Number Reverse a String using Recursion Find Sum of all Digits of a Number Print maximum occurring character in a String Weighted Graph Implementation – JAVA Graph – Depth First Search using Recursion Graph Implementation – Adjacency Matrix | Set 3 Java Pair Class Graph Implementation – Adjacency List - Better| Set 2 Deque Implementation – Java Nuts & Bolts Problem (Lock & Key problem) Number of bit to be flipped to convert one number to another. 1 2 3 4 5 6 7