30 lines
598 B
C
30 lines
598 B
C
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#include <stdio.h>
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#include <math.h>
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int binaryLength1(int i) {
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if (i == 0) return 1;
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int k = 1;
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i = i / 2;
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while (i > 0) {
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k++;
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i = i / 2;
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}
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return k;
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}
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int binaryLength2(int n) {
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if (n == 0) return 1;
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return (int)(log2(n)) + 1;
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}
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int binaryLength3(int n) {
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if (n == 0) return 1;
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int length = 0;
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while (n > 0) {
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n >>= 1; // 右移一位，相当于除以2
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length++;
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}
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return length;
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}
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int main(){
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printf("%d\n",binaryLength1(8));
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printf("%d\n",binaryLength2(8));
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printf("%d\n",binaryLength3(8));
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}
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