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Mutual recursion: Difference between revisions
→{{header|JavaScript}} changed syntax to match convention. Changed to use .map(). Added ES6 implementation
(→{{header|Elixir}}: add output) |
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Line 946:
=={{header|JavaScript}}==
<lang javascript>function
▲ return n === 0 ? 1 : n - M(F(n - 1));
}
function
▲ return n === 0 ? 0 : n - F(M(n - 1));
}
//make 20 elements to iterate over
//we can't use "new Array(20)" here because Array.prototype.map()
//doesn't run our function on 'undefined' elements
var a = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19];
//return a new array of the results and join with commas to print
console.log(a.map(function (n) { return f(n); }).join(', '));
console.log(a.map(function (n) { return m(n); }).join(', '));</lang>
{{out}}
<pre>1,1,2,2,3,3,4,5,5,6,6,7,8,8,9,9,10,11,11,12
0,0,1,2,2,3,4,4,5,6,6,7,7,8,9,9,10,11,11,12</pre>
ES6 implementation
<lang javascript>
var f = num => (num === 0) ? 1 : num - m(f(num - 1));
var m = num => (num === 0) ? 0 : num - f(m(num - 1));
//make 20 elements to iterate over
//we can't use "new Array(20)" here because Array.prototype.map()
//doesn't run our function on 'undefined' elements
var a = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19];
//return a new array of the results and join with commas to print
console.log(a.map(n => f(n)).join(', '));
console.log(a.map(n => m(n)).join(', '));</lang>
=={{header|jq}}==
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