16 lines
375 B
JavaScript
16 lines
375 B
JavaScript
function encode(input) {
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var encoding = [];
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var prev, count, i;
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for (count = 1, prev = input[0], i = 1; i < input.length; i++) {
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if (input[i] != prev) {
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encoding.push([count, prev]);
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count = 1;
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prev = input[i];
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}
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else
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count ++;
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}
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encoding.push([count, prev]);
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return encoding;
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}
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