1 package com.hughes.android.dictionary;
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3 public final class StringUtil {
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5 public static String longestCommonSubstring(final String s1, final String s2) {
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6 for (int i = 0; i < s1.length() && i < s2.length(); i++) {
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7 if (s1.charAt(i) != s2.charAt(i)) {
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8 return s1.substring(0, i);
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11 return s1.length() < s2.length() ? s1 : s2;
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