Tiger Analytics Analyst Interview Questions and Answers

Live coding using Python/CPP

• Practice coding challenges on platforms like LeetCode or HackerRank to improve coding skills

• Understand data structures and algorithms to solve coding problems efficiently

• Use online IDEs like Repl.it or CodePen for live coding sessions

Reverse the order of elements in an array of strings efficiently.

• Use a two-pointer approach: one pointer at the start and one at the end of the array.

• Swap the elements at these pointers and move towards the center.

• Continue until the pointers meet or cross each other.

• Example: For ['apple', 'banana', 'cherry'], the reversed array will be ['cherry', 'banana', 'apple'].

Rotate a 2D array by 90 degrees clockwise or counterclockwise.

• Transpose the matrix by swapping elements across the diagonal

• Reverse each row or column depending on clockwise or counterclockwise rotation

• Example: [[1,2],[3,4]] rotated clockwise becomes [[3,1],[4,2]]

Maximize profit by buying and selling stocks on given days with optimal strategy.

• Track the minimum price seen so far while iterating through the prices.

• Calculate potential profit by subtracting the current price from the minimum price.

• Update the maximum profit if the potential profit is greater than the current maximum.

• Example: For prices [7, 1, 5, 3, 6, 4], buy at 1 and sell at 6 for a profit of 5.

C is the regularization parameter while gamma controls the shape of the decision boundary in SVM.

• C controls the trade-off between achieving a low training error and a low testing error.

• A smaller C value creates a wider margin and allows more misclassifications.

• Gamma controls the shape of the decision boundary and the influence of each training example.

• A smaller gamma value creates a smoother decision boundary whil...read more

Python code to find the root of a number

• Use the math module to access the sqrt() function

• Use the ** operator to raise the number to the power of 1/n

• Handle negative numbers by converting them to complex numbers

My weakness is overthinking and my strength is attention to detail.

• Weakness: tend to overthink situations, which can lead to indecision or anxiety

• Strength: strong attention to detail, ensuring accuracy and thoroughness in work

• Example: Weakness - I sometimes spend too much time analyzing a problem before taking action. Strength - I am meticulous in my work, catching even the smallest errors.