找到在范围上接近价值的最佳途径......
for example i have an array with 0, 90, 180, 270, 360.. And a number 46...
找到90个阵列的最佳途径是什么?
(第3条)
找到在范围上接近价值的最佳途径......
for example i have an array with 0, 90, 180, 270, 360.. And a number 46...
找到90个阵列的最佳途径是什么?
(第3条)
你们如何最接近定义?
如果你指最小的差额,那么每值的差值就可乘以,计算差额的绝对值,就会注意到所看到的最小值。
如果名单按数量分类,那么,如果你认为差异大于最小,则整个清单就停止了。
如果你的阵列与你的模式([0、90、180、270、360])完全吻合,那么这似乎是一个分90步走的角,那么你可以做到:
var range:Array=[0, 90, 180, 270, 360];
function getIndexFrom(value:Number):int {
// keep the value in range (0, 360)
if (value<0) {
value= 360 - (-value % 360);
} else if (value>360) {
value=value % 360;
}
return int(0.5 + ( value / 90.0 ) );
}
var range:Array=[0, 90, 180, 270, 360];
trace(range.indexOf(90));
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