27 lines
598 B
C++
27 lines
598 B
C++
#include "s0014_longest_common_prefix.hpp"
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string S0014::longestCommonPrefix(vector<string>& strs) {
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string o{""};
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int size = strs.size();
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int minLen = strs.at(0).length();
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for (int i{0}; i < size; i++) {
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if (strs.at(i).length() < minLen) {
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minLen = strs.at(i).length();
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}
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}
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// string index
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for (int i{0}; i < minLen; i++) {
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string tmp = strs.at(0).substr(i, 1);
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// vector index
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for (int j{0}; j < size; j++) {
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if (strs.at(j).substr(i, 1) == tmp) {
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continue;
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} else {
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return o;
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}
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}
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o.append(tmp);
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}
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return o;
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}
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