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@@ -1,3 +1,5 @@
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+package JavaStringCheese;
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+
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/**
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* An introduction to Strings and String methods.
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@@ -15,7 +17,7 @@ public class StringParser
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*/
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public static String upperCaseString(String s)
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{
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- return null;
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+ return s.toUpperCase();
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}
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/**
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@@ -26,7 +28,7 @@ public class StringParser
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* @return String
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*/
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public static String lowerCaseString(String s) {
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- return null;
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+ return s.toLowerCase();
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}
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/**
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@@ -37,7 +39,7 @@ public class StringParser
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* @return String
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*/
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public static Character getFirstCharacter(String s) {
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- return null;
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+ return s.charAt(0);
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}
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/**
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@@ -49,7 +51,7 @@ public class StringParser
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* @return String
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*/
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public static Character getNthCharacter(String s, Integer n) {
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- return null;
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+ return s.charAt(n);
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}
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/**
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@@ -60,7 +62,8 @@ public class StringParser
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* @return String
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*/
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public static String upperCaseFirstCharacter(String s) {
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- return null;
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+ String s1= s.substring(0,1);
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+ return s1.toUpperCase() + s.substring(1);
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}
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/**
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@@ -72,7 +75,15 @@ public class StringParser
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* @return String
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*/
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public static String camelCaseString(String s) {
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- return null;
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+ s=s.toLowerCase(); //first convert string to ,lower case
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+ String[] s1=s.split(" "); // now convert string to an array
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+ String result="";
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+ for(int i=0; i<s1.length; i++)
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+ {
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+ result= result+ s1[i].toUpperCase().charAt(0) +s1[i].substring(1);
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+ // sysntax to remember-> s.toUpperCase.charAt(0) +s.substring -> for converting first char of string to capital and then joining
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+ }
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+ return result;
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}
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/**
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@@ -84,7 +95,18 @@ public class StringParser
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* @return String
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*/
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public static String snakeCaseString(String s) {
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- return null;
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+ String s1= "";
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+ //s= s.split("");
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+ for(int i=0; i< s.length() ;i++)
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+ {
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+ if (s.charAt(i) == ' ')
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+ {
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+ s1=s1 +"_";
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+ }
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+ else {s1= s1 + s.toLowerCase().charAt(i);}
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+ }
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+
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+ return s1.toLowerCase();
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}
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/**
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@@ -95,7 +117,7 @@ public class StringParser
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* @return String
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*/
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public static Integer getLength(String s) {
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- return null;
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+ return s.length();
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}
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/**
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@@ -109,7 +131,7 @@ public class StringParser
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* @return String
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*/
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public static Boolean isEqual(String s1, String s2) {
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- return null;
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+ return s1.equals(s2);
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}
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/**
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@@ -123,6 +145,6 @@ public class StringParser
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* @return String
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*/
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public static Boolean isEqualIgnoreCase(String s1, String s2) {
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- return null;
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+ return s1.equalsIgnoreCase(s2);
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}
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}
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