Tcs Coding Questions 2021 Link

Here are some TCS coding questions from 2021, along with a useful piece of code for each:

Format: Floating-point numbers must match the specified precision exactly (e.g., %.2f for two decimal places). Tcs Coding Questions 2021

int first_large = INT_MIN, second_large = INT_MIN;
int first_small = INT_MAX, second_small = INT_MAX;

    

  1. Question Recycling: TCS has a massive question bank. Approximately 40% of coding problems from 2021 resurface in later years with swapped variable names.
    2. 

  2. Pattern Consistency: The core topics—Arrays (60%), Strings (30%), and Basic Mathematics (10%) —have remained unchanged since 2021.
    3. 

  3. Difficulty Ceiling: In 2021, TCS introduced the "one logic twist" (e.g., removing one character from palindrome). That twist remains the standard.
    4. 


// For smallest
    if(arr[i] < first_small) 
        second_small = first_small;
        first_small = arr[i];
     else if(arr[i] < second_small && arr[i] != first_small) 
        second_small = arr[i];

Statement:

Given an array of N integers and an integer K, find the number of unique pairs (i, j) with i < j such that arr[i] + arr[j] = K. Here are some TCS coding questions from 2021,


    

  • The reversed integer M.
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: Finding the second largest/smallest element, rotating an array by positions, and finding missing numbers in a sequence. String Manipulation Question Recycling:  TCS has a massive question bank


Problem Statement:

Given an m x n matrix, print all elements in spiral order starting from the top-left corner moving right, then down, then left, then up.