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Solutions for HackerRank's wonderful (and often mind-bending) expanded versions of the Project Euler (projecteuler.net) problem archive.

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.gitignore
.gitignore
 
 
01_Multiples-of-3-and-5.cpp
01_Multiples-of-3-and-5.cpp
 
 
02_Even-Fibonacci-Numbers.cpp
02_Even-Fibonacci-Numbers.cpp
 
 
03_Largest-prime-factor.cpp
03_Largest-prime-factor.cpp
 
 
04_Largest-palindrome-product.cpp
04_Largest-palindrome-product.cpp
 
 
05_Smallest-multiple.cpp
05_Smallest-multiple.cpp
 
 
06_Sum-square-difference.cpp
06_Sum-square-difference.cpp
 
 
07_10001st-prime.cpp
07_10001st-prime.cpp
 
 
08_Largest-product-in-a-series.cpp
08_Largest-product-in-a-series.cpp
 
 
09_Special-Pythagorean-triplet.cpp
09_Special-Pythagorean-triplet.cpp
 
 
102_Triangle-containment.cpp
102_Triangle-containment.cpp
 
 
103_Special-subset-sums-optimum.cpp
103_Special-subset-sums-optimum.cpp
 
 
104_Pandigital-Fibonacci-ends.cpp
104_Pandigital-Fibonacci-ends.cpp
 
 
105_Special-subset-sums.cpp
105_Special-subset-sums.cpp
 
 
107_Minimal-network.cpp
107_Minimal-network.cpp
 
 
10_Summation-of-primes.cpp
10_Summation-of-primes.cpp
 
 
111_Primes-with-runs.py
111_Primes-with-runs.py
 
 
113_Non-bouncy-numbers.cpp
113_Non-bouncy-numbers.cpp
 
 
114_Counting-block-combinations.cpp
114_Counting-block-combinations.cpp
 
 
116_Red-green-or-blue-tiles.cpp
116_Red-green-or-blue-tiles.cpp
 
 
117_Red-green-and-blue-tiles.cpp
117_Red-green-and-blue-tiles.cpp
 
 
118_Pandigital-prime-sets.cpp
118_Pandigital-prime-sets.cpp
 
 
119_Digit-power-sum.cpp
119_Digit-power-sum.cpp
 
 
11_Largest-product-in-a-grid.cpp
11_Largest-product-in-a-grid.cpp
 
 
121_Disc-game-prize-fund.cpp
121_Disc-game-prize-fund.cpp
 
 
12_Highly-divisible-trangular-number.cpp
12_Highly-divisible-trangular-number.cpp
 
 
13_Large-sum.cpp
13_Large-sum.cpp
 
 
14_Longest-Collatz-sequence.cpp
14_Longest-Collatz-sequence.cpp
 
 
150_Searching-a-triangular-array-for-a-sub-triangle-having-minimum-sum.cpp
150_Searching-a-triangular-array-for-a-sub-triangle-having-minimum-sum.cpp
 
 
159_Digital-root-sums-of-factorisations.cpp
159_Digital-root-sums-of-factorisations.cpp
 
 
15_Lattice-paths.cpp
15_Lattice-paths.cpp
 
 
161_Triominoes.cpp
161_Triominoes.cpp
 
 
162_Hexadecimal-numbers.cpp
162_Hexadecimal-numbers.cpp
 
 
16_Power-digit-sum.cpp
16_Power-digit-sum.cpp
 
 
17_Number-to-Words.cpp
17_Number-to-Words.cpp
 
 
186_Connectedness-of-a-network.cpp
186_Connectedness-of-a-network.cpp
 
 
187_Semiprimes.cpp
187_Semiprimes.cpp
 
 
18_Maximum-path-sum-I.cpp
18_Maximum-path-sum-I.cpp
 
 
197_Investigating-the-behaviour-of-a-recursively-defined-sequence.cpp
197_Investigating-the-behaviour-of-a-recursively-defined-sequence.cpp
 
 
19_Counting-sundays.cpp
19_Counting-sundays.cpp
 
 
200_Find-the-200th-prime-proof-sqube-containing-the-contiguous-substring-200.cpp
200_Find-the-200th-prime-proof-sqube-containing-the-contiguous-substring-200.cpp
 
 
201_Subsets-with-a-unique-sum.cpp
201_Subsets-with-a-unique-sum.cpp
 
 
207_Integer-partition-equations
207_Integer-partition-equations
 
 
207_Integer-partition-equations.py
207_Integer-partition-equations.py
 
 
20_Factorial-digit-sum.cpp
20_Factorial-digit-sum.cpp
 
 
211_Divisor-square-sum.cpp
211_Divisor-square-sum.cpp
 
 
21_Amicable-numbers.cpp
21_Amicable-numbers.cpp
 
 
22_Names-scores.cpp
22_Names-scores.cpp
 
 
23_Non-abundant-sums.cpp
23_Non-abundant-sums.cpp
 
 
24_Lexicographic-permutations.cpp
24_Lexicographic-permutations.cpp
 
 
25_N-digit-Fibonacci-number.cpp
25_N-digit-Fibonacci-number.cpp
 
 
26_Reciprocal-cycles.cpp
26_Reciprocal-cycles.cpp
 
 
27_Quadratic-primes.cpp
27_Quadratic-primes.cpp
 
 
30_Digit-Nth-powers.cpp
30_Digit-Nth-powers.cpp
 
 
31_Coin-sums.cpp
31_Coin-sums.cpp
 
 
32_Pandigital-products.cpp
32_Pandigital-products.cpp
 
 
33_Digit-canceling-fractions.cpp
33_Digit-canceling-fractions.cpp
 
 
34_Digit-factorials.cpp
34_Digit-factorials.cpp
 
 
35_Circular-primes.cpp
35_Circular-primes.cpp
 
 
36_Double-base-palindromes.js
36_Double-base-palindromes.js
 
 
37_Truncatable-primes.cpp
37_Truncatable-primes.cpp
 
 
38_Pandigital-multiples.cpp
38_Pandigital-multiples.cpp
 
 
39_Integer-right-triangles.cpp
39_Integer-right-triangles.cpp
 
 
40_Champernowne's-constant.cpp
40_Champernowne's-constant.cpp
 
 
41_Pandigital-prime.cpp
41_Pandigital-prime.cpp
 
 
42_Coded-triangle-numbers.cpp
42_Coded-triangle-numbers.cpp
 
 
43_Substring-divisibility.cpp
43_Substring-divisibility.cpp
 
 
44_Pentagon-numbers.cpp
44_Pentagon-numbers.cpp
 
 
45_Triangular-pentagonal-and-hexagonal.cpp
45_Triangular-pentagonal-and-hexagonal.cpp
 
 
46-Goldbach's-other-conjecture.cpp
46-Goldbach's-other-conjecture.cpp
 
 
47_Distinct-prime-factors.cpp
47_Distinct-prime-factors.cpp
 
 
49_Prime-permutations.cpp
49_Prime-permutations.cpp
 
 
51_Consecutive-prime-sum.cpp
51_Consecutive-prime-sum.cpp
 
 
51_Prime-digit-replacements.cpp
51_Prime-digit-replacements.cpp
 
 
52_Permuted-multiples.cpp
52_Permuted-multiples.cpp
 
 
53_Combinatoric-selections.py
53_Combinatoric-selections.py
 
 
53_Combinatoric-selections.py~
53_Combinatoric-selections.py~
 
 
54_Poker-hands.cpp
54_Poker-hands.cpp
 
 
55_Lychrel-numbers.cpp
55_Lychrel-numbers.cpp
 
 
56_Powerful-digit-sum.cpp
56_Powerful-digit-sum.cpp
 
 
57_Square-root-convergents.cpp
57_Square-root-convergents.cpp
 
 
58_Spiral-primes.cpp
58_Spiral-primes.cpp
 
 
59_XOR-decryption.cpp
59_XOR-decryption.cpp
 
 
60_Prime-pair-sets.cpp
60_Prime-pair-sets.cpp
 
 
61_Cyclical-figurate-numbers.cpp
61_Cyclical-figurate-numbers.cpp
 
 
62_Cubic-permutations.cpp
62_Cubic-permutations.cpp
 
 
63_Powerful-digit-counts.cpp
63_Powerful-digit-counts.cpp
 
 
65_Convergents-of-e.py
65_Convergents-of-e.py
 
 
65_Convergents-of-e.py~
65_Convergents-of-e.py~
 
 
65_Odd-period-square-roots.cpp
65_Odd-period-square-roots.cpp
 
 
66_Diophantine-equation.py
66_Diophantine-equation.py
 
 
66_Diophantine-equation.py~
66_Diophantine-equation.py~
 
 
67_Maximum-path-sum-II.cpp
67_Maximum-path-sum-II.cpp
 
 
68_Magic-N-gon-ring.cpp
68_Magic-N-gon-ring.cpp
 
 
69_Totient-maximum.cpp
69_Totient-maximum.cpp
 
 
70_Totient-permutation.cpp
70_Totient-permutation.cpp
 
 
70_Totient-permutations.cpp
70_Totient-permutations.cpp
 
 
72_Counting-fractions.cpp
72_Counting-fractions.cpp
 
 
74_Digit-factorial-chains.cpp
74_Digit-factorial-chains.cpp
 
 
75_Singular-integer-right-triangles.cpp
75_Singular-integer-right-triangles.cpp
 
 

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Project-Euler-Solutions

Solutions for HackerRank's wonderful (and at times ruthlessly difficult) expanded versions of the Project Euler (projecteuler.net) problem archive.

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