function calAdaptability(chromosomeMatrix) {
 adaptability = [];
 // 计算每条染色体的任务长度
 for (var chromosomeIndex=0; chromosomeIndex<chromosomeNum; chromosomeIndex++) {
 var maxLength = Number.MIN_VALUE;
 for (var nodeIndex=0; nodeIndex<nodeNum; nodeIndex++) {
 var sumLength = 0;
 for (var taskIndex=0; taskIndex<taskNum; taskIndex++) {
 if (chromosomeMatrix[chromosomeIndex][taskIndex] == nodeIndex) {
 sumLength += timeMatrix[taskIndex][nodeIndex];
 }
 }
 if (sumLength > maxLength) {
 maxLength = sumLength;
 }
 }
 // 适应度 = 1/任务长度
 adaptability.push(1/maxLength);
 }
}

var maxLength = Number.MIN_VALUE;
var sumLength = 0;
for (var taskIndex=0; taskIndex<taskNum; taskIndex++) {
 var nodeIndex = chromosomeMatrix[chromosomeIndex][taskIndex]
 sumLength += timeMatrix[taskIndex][nodeIndex];
}
if (sumLength > maxLength) {
 maxLength = sumLength;
}