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AVAILABLE LESSONS:

Lesson 1

Iterations

Lesson 2

Arrays

Lesson 3

Time Complexity

Lesson 4

Counting Elements

Lesson 5

Prefix Sums

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Lesson 7

Stacks and Queues

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Leader

Lesson 9

Maximum slice problem

Lesson 10

Prime and composite numbers

Lesson 11

Sieve of Eratosthenes

Lesson 12

Euclidean algorithm

Lesson 13

Fibonacci numbers

Lesson 14

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Lesson 15

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Lesson 16

Greedy algorithms

Lesson 17

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Lesson 90

Tasks from Indeed Prime 2015 challenge

Lesson 91

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Lesson 92

Tasks from Indeed Prime 2016 College Coders challenge

Lesson 99

Future training

painless

Programming language:
Spoken language:

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

int solution(int A[], int N);

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

Copyright 2009–2020 by Codility Limited. All Rights Reserved. Unauthorized copying, publication or disclosure prohibited.

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

int solution(vector<int> &A);

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

Copyright 2009–2020 by Codility Limited. All Rights Reserved. Unauthorized copying, publication or disclosure prohibited.

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

class Solution { public int solution(int[] A); }

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

Copyright 2009–2020 by Codility Limited. All Rights Reserved. Unauthorized copying, publication or disclosure prohibited.

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

func Solution(A []int) int

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

class Solution { public int solution(int[] A); }

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

function solution(A);

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

fun solution(A: IntArray): Int

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

function solution(A)

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

int solution(NSMutableArray *A);

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

function solution(A: array of longint; N: longint): longint;

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

function solution($A);

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

sub solution { my (@A)=@_; ... }

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

def solution(A)

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

def solution(a)

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

object Solution { def solution(a: Array[Int]): Int }

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

public func solution(_ A : inout [Int]) -> Int

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

对于一个给定的整数数组, "支配者"是在这个数组中出现的频率超过一半的整数.

例如:

数值"3"出现过5次, 5/8 > 0.5, 所以数值"3"是一个"支配者";

而在这个数组中, 这个"支配者"出现在数组下标:

- 0, 2, 4, 6 , 7.

请写一个函数

Private Function solution(A As Integer()) As Integer

对给定数组返回其任意一个支配者的数组下标。

例如，对上述数组，函数可以返回0，2，4，6，7中的任意一个。 如果没有支配者，函数应该返回 −1。

假定:

- N 是 [0..100,000] 内的 整数;
- 数组 A 每个元素是取值范围 [−2,147,483,648..2,147,483,647] 内的 整数 .

An array A consisting of N integers is given. The *dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

The dominator of A is 3 because it occurs in 5 out of 8 elements of A (namely in those with indices 0, 2, 4, 6 and 7) and 5 is more than a half of 8.

Write a function

int solution(int A[], int N);

that, given an array A consisting of N integers, returns index of any element of array A in which the dominator of A occurs. The function should return −1 if array A does not have a dominator.

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

An array A consisting of N integers is given. The *dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

The dominator of A is 3 because it occurs in 5 out of 8 elements of A (namely in those with indices 0, 2, 4, 6 and 7) and 5 is more than a half of 8.

Write a function

int solution(vector<int> &A);

that, given an array A consisting of N integers, returns index of any element of array A in which the dominator of A occurs. The function should return −1 if array A does not have a dominator.

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

An array A consisting of N integers is given. The *dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

The dominator of A is 3 because it occurs in 5 out of 8 elements of A (namely in those with indices 0, 2, 4, 6 and 7) and 5 is more than a half of 8.

Write a function

class Solution { public int solution(int[] A); }

that, given an array A consisting of N integers, returns index of any element of array A in which the dominator of A occurs. The function should return −1 if array A does not have a dominator.

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

*dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

Write a function

func Solution(A []int) int

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

*dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

Write a function

class Solution { public int solution(int[] A); }

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

*dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

Write a function

function solution(A);

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

*dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

Write a function

fun solution(A: IntArray): Int

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

*dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

Write a function

function solution(A)

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

Note: All arrays in this task are zero-indexed, unlike the common Lua convention. You can use `#A` to get the length of the array A.

*dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

Write a function

int solution(NSMutableArray *A);

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

*dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

Write a function

function solution(A: array of longint; N: longint): longint;

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

*dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

Write a function

function solution($A);

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

*dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

Write a function

sub solution { my (@A)=@_; ... }

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

*dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

Write a function

def solution(A)

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

*dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

Write a function

def solution(a)

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

*dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

Write a function

object Solution { def solution(a: Array[Int]): Int }

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

*dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

Write a function

public func solution(_ A : inout [Int]) -> Int

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

*dominator* of array A is the value that occurs in more than half of the elements of A.

For example, consider array A such that

Write a function

Private Function solution(A As Integer()) As Integer

For example, given array A such that

the function may return 0, 2, 4, 6 or 7, as explained above.

Write an ** efficient** algorithm for the following assumptions:

- N is an integer within the range [0..100,000];
- each element of array A is an integer within the range [−2,147,483,648..2,147,483,647].

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