Cody

# Problem 1411. Number of lattice points within a circle

Solution 227382

Submitted on 5 Apr 2013 by @bmtran
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### Test Suite

Test Status Code Input and Output
1   Pass
%% assert(isequal(within_circle(1),5))

``` ```

2   Pass
%% assert(isequal(within_circle(3),9))

``` ```

3   Pass
%% assert(isequal(within_circle(20),69))

``` ```

4   Pass
%% assert(isequal(within_circle(45),145))

``` ```

5   Pass
%% assert(isequal(within_circle(55),177))

``` ```

6   Pass
%% assert(isequal(within_circle(500),1581))

``` ```

7   Pass
%% assert(isequal(within_circle(10000),31417))

``` ```

8   Pass
%% assert(isequal(within_circle(50000),157093))

``` ```

9   Pass
%% assert(isequal(within_circle(999999),3141521))

``` ```

10   Pass
%% assert(isequal(within_circle(9999999),31415993))

``` ```

11   Pass
%% assert(isequal(within_circle(99999999),314159017)) % Approaching to Pi...

``` ```

12   Pass
%% filetext = fileread('within_circle.m'); assert(isempty(strfind(filetext, 'switch'))) assert(isempty(strfind(filetext, 'case'))) assert(isempty(strfind(filetext, 'if')))

``` ```