34 lines
829 B
C#
34 lines
829 B
C#
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public class Solution {
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private static int WriteChar(char[] chars, int start, char c, int count) {
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chars[start++] = c;
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if (count == 1) {
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return start;
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}
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int digits = 1 + (int)Math.Log10(count);
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start += digits - 1;
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for (int offset = 0; offset < digits; count /= 10, ++offset) {
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chars[start - offset] = (char)('0' + (count % 10));
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}
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return start + 1;
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}
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public int Compress(char[] chars) {
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int i = 0;
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var count = 1;
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for (int j = 1; j < chars.Length; ++j) {
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if (chars[j] != chars[j - 1]) {
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i = WriteChar(chars, i, chars[j - 1], count);
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count = 0;
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}
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++count;
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}
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return WriteChar(chars, i, chars.Last(), count);
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}
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}
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