# Status Problem video Level Completes Likes 540 find the Arithmetic Progression sequence Beginner % 3 539 Find the Nth-term in a given arithmetic progression Beginner % 1 525 Find the number of pairs with odd XOR Beginner % 2 450 Given two coordinates, Print the line equation Beginner % 0 416 Evaluation of Prefix Expressions (Polish Notation) | Set 2 Medium % 0 412 Check if Number is divisible by its digits Beginner % 0 410 Evaluation of Prefix Expressions (Polish Notation) | Set 1 Medium % 0 406 Evaluation of Postfix Expressions (Polish Postfix notation) | Set 2 Medium % 0 402 Check if Arithmetic Expression contains duplicate parenthesis Medium % 0 390 Convert Prefix to Postfix Expression Medium % 0 387 Convert Postfix to Prefix Expression Medium % 0 377 Convert Postfix to Infix Expression Medium % 0 371 Convert Infix to Prefix Expression Medium % 0 365 Convert Infix to Postfix Expression Medium % 0 363 Evaluation of Infix expressions Medium % 0 361 Convert Prefix to Infix Expression Medium % 0 358 Infix, Postfix and Prefix Notations/Expressions Beginner % 0 352 Check if given number is perfect square - O(√N) Solution Beginner % 0 345 Find the roots of Quadratic Equation – Java Program Beginner % 0 336 Calculate Logn base r – Java Implementation Beginner % 0 find the Arithmetic Progression sequence Find the Nth-term in a given arithmetic progression Find the number of pairs with odd XOR Given two coordinates, Print the line equation Evaluation of Prefix Expressions (Polish Notation) | Set 2 Check if Number is divisible by its digits Evaluation of Prefix Expressions (Polish Notation) | Set 1 Evaluation of Postfix Expressions (Polish Postfix notation) | Set 2 Check if Arithmetic Expression contains duplicate parenthesis Convert Prefix to Postfix Expression Convert Postfix to Prefix Expression Convert Postfix to Infix Expression Convert Infix to Prefix Expression Convert Infix to Postfix Expression Evaluation of Infix expressions Convert Prefix to Infix Expression Infix, Postfix and Prefix Notations/Expressions Check if given number is perfect square - O(√N) Solution Find the roots of Quadratic Equation – Java Program Calculate Logn base r – Java Implementation 1 2