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@@ -9,7 +9,7 @@ public class StringArrayUtils {
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* @return first element of specified array
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*/ // TODO
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public static String getFirstElement(String[] array) {
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- return null;
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+ return array[0];
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}
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/**
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@@ -17,7 +17,7 @@ public class StringArrayUtils {
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* @return second element in specified array
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*/
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public static String getSecondElement(String[] array) {
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- return null;
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+ return array[1];
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}
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/**
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@@ -25,7 +25,7 @@ public class StringArrayUtils {
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* @return last element in specified array
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*/ // TODO
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public static String getLastElement(String[] array) {
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- return null;
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+ return array[array.length-1];
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}
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/**
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@@ -33,7 +33,7 @@ public class StringArrayUtils {
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* @return second to last element in specified array
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*/ // TODO
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public static String getSecondToLastElement(String[] array) {
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- return null;
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+ return array[array.length-2];
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}
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/**
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@@ -42,15 +42,22 @@ public class StringArrayUtils {
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* @return true if the array contains the specified `value`
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*/ // TODO
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public static boolean contains(String[] array, String value) {
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+ for(int i = 0; i < array.length; i++) {
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+ if(array[i].equals(value)) return true;
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+ }
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return false;
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}
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-
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+
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/**
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* @param array of String objects
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* @return an array with identical contents in reverse order
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*/ // TODO
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public static String[] reverse(String[] array) {
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- return null;
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+ String[] revArray = new String[array.length];
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+ for (int i = 0; i < array.length; i++) {
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+ revArray[i] = array[array.length - 1 - i];
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+ }
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+ return revArray;
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}
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/**
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@@ -58,15 +65,27 @@ public class StringArrayUtils {
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* @return true if the order of the array is the same backwards and forwards
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66
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*/ // TODO
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67
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public static boolean isPalindromic(String[] array) {
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61
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- return false;
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68
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+
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69
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+ for ( int i = 0; i < array.length / 2; i++) {
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+ if (array[i] != array[array.length - 1 - i]) {
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+ return false;
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+ }
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+ }
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+ return true;
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}
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-
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+
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/**
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65
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78
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* @param array array of String objects
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79
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* @return true if each letter in the alphabet has been used in the array
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67
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80
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*/ // TODO
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68
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81
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public static boolean isPangramic(String[] array) {
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- return false;
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82
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+ for(char c = 'a';c <= 'z'; ++c) {
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+ if(array.toString().contains(String.valueOf(c))) {
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+ return true;
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+
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+ }
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87
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+
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+ }return false;
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}
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90
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91
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/**
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@@ -74,17 +93,36 @@ public class StringArrayUtils {
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93
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* @param value value to check array for
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75
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94
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* @return number of occurrences the specified `value` has occurred
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76
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95
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*/ // TODO
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96
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+
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77
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97
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public static int getNumberOfOccurrences(String[] array, String value) {
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78
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- return 0;
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79
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- }
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98
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+ int num = 0;
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99
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+ for (int i=0;i<array.length;i++){
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100
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+ if (array[i]== value){
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101
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+ num++;
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102
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+ }
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103
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+
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104
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+ }
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80
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105
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106
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+ return num;
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+ }
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108
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+
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81
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109
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/**
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82
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110
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* @param array array of String objects
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83
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111
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* @param valueToRemove value to remove from array
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84
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112
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* @return array with identical contents excluding values of `value`
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85
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113
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*/ // TODO
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86
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114
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public static String[] removeValue(String[] array, String valueToRemove) {
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87
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- return null;
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115
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+ String[] arr = new String[array.length-1];
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116
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+ String[] remArr = new String[1];
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117
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+ for (int i=0;i<array.length;i++){
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118
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+ if (array[i]!=valueToRemove){
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119
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+ arr[i] = array[i];
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120
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+
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121
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+ }else { remArr[i] += array[i];}
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122
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+
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123
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+ }
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124
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+
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125
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+ return arr;
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88
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126
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}
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89
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127
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90
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128
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/**
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@@ -94,7 +132,7 @@ public class StringArrayUtils {
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94
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132
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public static String[] removeConsecutiveDuplicates(String[] array) {
|
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95
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133
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return null;
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96
|
134
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}
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97
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-
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135
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+
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98
|
136
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/**
|
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99
|
137
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* @param array array of chars
|
|
100
|
138
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* @return array of Strings with each consecutive duplicate occurrence concatenated as a single string in an array of Strings
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