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leetcode-algorithms/src/DetectCapital.java at master · anishLearnsToCode/leetcode-algorithms · GitHub

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public class DetectCapital {

public boolean detectCapitalUse(String word) {

return isAllCaps(word) || isAllLowerCase(word, 0) || firstCharIsCapital(word);

}

private boolean isAllCaps(String string) {

for (int index = 0 ; index < string.length() ; index++) {

if (Character.isLowerCase(string.charAt(index))) {

return false;

}

}

return true;

}

private boolean isAllLowerCase(String string, int start) {

for (int index = start ; index < string.length() ; index++) {

if (Character.isUpperCase(string.charAt(index))) {

return false;

}

}

return true;

}

private boolean firstCharIsCapital(String string) {

return Character.isUpperCase(string.charAt(0)) && isAllLowerCase(string, 1);

}

}

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