CSCI 201 002, 15 September

• Doing things with array
  • labGrade[0] + labGrade[1] + labGrade[2] + labGrade[3] + ...
  • Need a way to do something with every element
  • Σ_{i = 0, n} x_i
  • Σ X, for set X
• Iteration -- Doing an action more than once
• For recent (version≥1.5) Java
  • int sum = 0 ;
  • for (int grade : labGrade) {
  •     sum = sum + grade ;
  • }
• For all Java
  • int sum = 0 ;
  • for (int i=0; i<labGrade.length; ++i) {
  •     sum = sum + labGrade[i] ;
  • }
• Without for, For all Java
  • int sum = 0 ;
  • for (int i=0; i<labGrade.length; ++i) {
  •     sum = sum + labGrade[i] ;
  • }
• flowcharts