36a-practice-final-solutions

36a-practice-final-solutions - Handout #36A CS 106A Aug 13,...

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Unformatted text preview: Handout #36A CS 106A Aug 13, 2008 Answers to Practice Final Problem 1Short answer (11 points) 1a) The answer is feli 1b) private char ch; public void run() { ch = 'e'; String word = "bookkeeper"; String soFar = "b--kk--p--"; String answer = revealLetter(word, soFar); ch = 'f'; println(Guessing e on + soFar + gives us: + answer); } private String revealLetter(String word, String display) { String nuWord; for(int i = 1; i < word.length(); i++) { char ch = word.charAt(i); if(ch.equals(this.ch)) { nuWord += this.ch; }else{ nuWord += display; } } return nuWord; } } 2 Problem 2 Arrays (19 points) //Solution for problem 2a private String odometerString( int array) { String s = "" ; int i = 0; //advances the cursors so that we skip any leading zeroes while (array[i] == 0) { i++; if (i == 5) { break ; } } //goes through and copies the numbers into the string //inserting commas n stuff. while (i < array. length ) { s+=array[i]; if (i == 2) { s+= "," ; } if (i == 5) { s+= "." ; } i++; } return s; } //Solution for problem 2b private void add1TenthMile( int digits) { int i = 6; digits[i]++; while (digits[i] >= 10 && i > 0) { digits[i] = 0; i--; digits[i]++; } if (digits[0] >= 10) { digits[0] = 0; } } 3...
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36a-practice-final-solutions - Handout #36A CS 106A Aug 13,...

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