Interview Prep/Companies/American Express

American Express

23 questions tracked23 with solutions

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Frequency scoreSorted highest → lowest frequency✓ Our Solution = we have a detailed walkthrough

Showing 23 of 23 questions

MediumMinimum Deletions to Make Character Frequencies Unique✓ Our Solution

100

Hash TableStringGreedySorting

LeetCode ↗61% acc.

HardMaximum Equal Frequency✓ Our Solution

ArrayHash Table

LeetCode ↗37% acc.

EasyPercentage of Letter in String✓ Our Solution

String

LeetCode ↗74% acc.

MediumMinimum Number of Operations to Make Array XOR Equal to K✓ Our Solution

ArrayBit Manipulation

LeetCode ↗85% acc.

MediumEqual Sum Arrays With Minimum Number of Operations✓ Our Solution

ArrayHash TableGreedyCounting

LeetCode ↗54% acc.

HardFind a Value of a Mysterious Function Closest to Target✓ Our Solution

ArrayBinary SearchBit ManipulationSegment Tree

LeetCode ↗46% acc.

MediumMaximum XOR After Operations✓ Our Solution

ArrayMathBit Manipulation

LeetCode ↗79% acc.

HardDivide an Array Into Subarrays With Minimum Cost II✓ Our Solution

ArrayHash TableSliding WindowHeap (Priority Queue)

LeetCode ↗30% acc.

EasyDivide an Array Into Subarrays With Minimum Cost I✓ Our Solution

ArraySortingEnumeration

LeetCode ↗66% acc.

MediumMaximize the Topmost Element After K Moves✓ Our Solution

ArrayGreedy

LeetCode ↗23% acc.

MediumUgly Number III✓ Our Solution

MathBinary SearchCombinatoricsNumber Theory

LeetCode ↗30% acc.

EasyTwo Sum✓ Our Solution

ArrayHash Table

LeetCode ↗56% acc.

Medium3Sum✓ Our Solution

ArrayTwo PointersSorting

LeetCode ↗37% acc.

EasyValid Anagram✓ Our Solution

Hash TableStringSorting

LeetCode ↗67% acc.

MediumMinimum Fuel Cost to Report to the Capital✓ Our Solution

TreeDepth-First SearchBreadth-First SearchGraph

LeetCode ↗64% acc.

EasyAdd Digits✓ Our Solution

MathSimulationNumber Theory

LeetCode ↗68% acc.

EasyValid Palindrome✓ Our Solution

Two PointersString

LeetCode ↗51% acc.

MediumRotate Array✓ Our Solution

ArrayMathTwo Pointers

LeetCode ↗43% acc.

EasyBest Time to Buy and Sell Stock✓ Our Solution

ArrayDynamic Programming

LeetCode ↗55% acc.

MediumReconstruct a 2-Row Binary Matrix✓ Our Solution

ArrayGreedyMatrix

LeetCode ↗48% acc.

HardTrapping Rain Water✓ Our Solution

ArrayTwo PointersDynamic ProgrammingStack+1

LeetCode ↗65% acc.

MediumLongest Substring Without Repeating Characters✓ Our Solution

Hash TableStringSliding Window

LeetCode ↗37% acc.

MediumPermutations✓ Our Solution

ArrayBacktracking

LeetCode ↗81% acc.