Problems by Rajib_119

Calculate the Sum If You Can
This problem deals with the following expression: 1−2+1−2+1−2+1−2+1−2+1−2+1−2+... Given n, you have ...
Math Very Easy 354/391/717
Hardest Update and Easiest Query
You have an array A with n elements which is indexed from 1 to n. Now you have to deal with two type...
Moderate 29/38/149
Lowercase or Uppercase
You are given a string S consisting of lowercase English letters (a, b, c ….. z), uppercase English ...
Very Easy 205/238/550
Nitu and Her Lucky String
Recently, Nitu has developed a keen interest in solving string-related problems. She possesses a spe...
Moderate 16/18/91
Nitu and Pseudo-code
Last night, Nitu came across the following pseudo-code. She understood that this method would take t...
Moderate 10/17/110
Nitu the Laziest Girl
Did you hear about the lazy girl Nitu? She loves programming a lot and spends most of her times in p...
Moderate 63/72/189
Unique String
There are 3 types of letters available. They are A, B and C. You are given the frequencies of them. ...
Moderate 3/12/28
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